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powerpc/eeh: Fix PE#0 check in eeh_add_to_parent_pe()
[linux/fpc-iii.git] / drivers / net / wireless / mwl8k.c
blobf9b1218c761a4b7a187c239239365fe077649624
1 /*
2 * drivers/net/wireless/mwl8k.c
3 * Driver for Marvell TOPDOG 802.11 Wireless cards
4 *
5 * Copyright (C) 2008, 2009, 2010 Marvell Semiconductor Inc.
6 *
7 * This file is licensed under the terms of the GNU General Public
8 * License version 2. This program is licensed "as is" without any
9 * warranty of any kind, whether express or implied.
10 */
11
12 #include <linux/interrupt.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/sched.h>
16 #include <linux/spinlock.h>
17 #include <linux/list.h>
18 #include <linux/pci.h>
19 #include <linux/delay.h>
20 #include <linux/completion.h>
21 #include <linux/etherdevice.h>
22 #include <linux/slab.h>
23 #include <net/mac80211.h>
24 #include <linux/moduleparam.h>
25 #include <linux/firmware.h>
26 #include <linux/workqueue.h>
27
28 #define MWL8K_DESC "Marvell TOPDOG(R) 802.11 Wireless Network Driver"
29 #define MWL8K_NAME KBUILD_MODNAME
30 #define MWL8K_VERSION "0.13"
31
32 /* Module parameters */
33 static bool ap_mode_default;
34 module_param(ap_mode_default, bool, 0);
35 MODULE_PARM_DESC(ap_mode_default,
36 "Set to 1 to make ap mode the default instead of sta mode");
37
38 /* Register definitions */
39 #define MWL8K_HIU_GEN_PTR 0x00000c10
40 #define MWL8K_MODE_STA 0x0000005a
41 #define MWL8K_MODE_AP 0x000000a5
42 #define MWL8K_HIU_INT_CODE 0x00000c14
43 #define MWL8K_FWSTA_READY 0xf0f1f2f4
44 #define MWL8K_FWAP_READY 0xf1f2f4a5
45 #define MWL8K_INT_CODE_CMD_FINISHED 0x00000005
46 #define MWL8K_HIU_SCRATCH 0x00000c40
47
48 /* Host->device communications */
49 #define MWL8K_HIU_H2A_INTERRUPT_EVENTS 0x00000c18
50 #define MWL8K_HIU_H2A_INTERRUPT_STATUS 0x00000c1c
51 #define MWL8K_HIU_H2A_INTERRUPT_MASK 0x00000c20
52 #define MWL8K_HIU_H2A_INTERRUPT_CLEAR_SEL 0x00000c24
53 #define MWL8K_HIU_H2A_INTERRUPT_STATUS_MASK 0x00000c28
54 #define MWL8K_H2A_INT_DUMMY (1 << 20)
55 #define MWL8K_H2A_INT_RESET (1 << 15)
56 #define MWL8K_H2A_INT_DOORBELL (1 << 1)
57 #define MWL8K_H2A_INT_PPA_READY (1 << 0)
58
59 /* Device->host communications */
60 #define MWL8K_HIU_A2H_INTERRUPT_EVENTS 0x00000c2c
61 #define MWL8K_HIU_A2H_INTERRUPT_STATUS 0x00000c30
62 #define MWL8K_HIU_A2H_INTERRUPT_MASK 0x00000c34
63 #define MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL 0x00000c38
64 #define MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK 0x00000c3c
65 #define MWL8K_A2H_INT_DUMMY (1 << 20)
66 #define MWL8K_A2H_INT_BA_WATCHDOG (1 << 14)
67 #define MWL8K_A2H_INT_CHNL_SWITCHED (1 << 11)
68 #define MWL8K_A2H_INT_QUEUE_EMPTY (1 << 10)
69 #define MWL8K_A2H_INT_RADAR_DETECT (1 << 7)
70 #define MWL8K_A2H_INT_RADIO_ON (1 << 6)
71 #define MWL8K_A2H_INT_RADIO_OFF (1 << 5)
72 #define MWL8K_A2H_INT_MAC_EVENT (1 << 3)
73 #define MWL8K_A2H_INT_OPC_DONE (1 << 2)
74 #define MWL8K_A2H_INT_RX_READY (1 << 1)
75 #define MWL8K_A2H_INT_TX_DONE (1 << 0)
76
77 /* HW micro second timer register
78 * located at offset 0xA600. This
79 * will be used to timestamp tx
80 * packets.
81 */
82
83 #define MWL8K_HW_TIMER_REGISTER 0x0000a600
84 #define BBU_RXRDY_CNT_REG 0x0000a860
85 #define NOK_CCA_CNT_REG 0x0000a6a0
86 #define BBU_AVG_NOISE_VAL 0x67
87
88 #define MWL8K_A2H_EVENTS (MWL8K_A2H_INT_DUMMY | \
89 MWL8K_A2H_INT_CHNL_SWITCHED | \
90 MWL8K_A2H_INT_QUEUE_EMPTY | \
91 MWL8K_A2H_INT_RADAR_DETECT | \
92 MWL8K_A2H_INT_RADIO_ON | \
93 MWL8K_A2H_INT_RADIO_OFF | \
94 MWL8K_A2H_INT_MAC_EVENT | \
95 MWL8K_A2H_INT_OPC_DONE | \
96 MWL8K_A2H_INT_RX_READY | \
97 MWL8K_A2H_INT_TX_DONE | \
98 MWL8K_A2H_INT_BA_WATCHDOG)
99
100 #define MWL8K_RX_QUEUES 1
101 #define MWL8K_TX_WMM_QUEUES 4
102 #define MWL8K_MAX_AMPDU_QUEUES 8
103 #define MWL8K_MAX_TX_QUEUES (MWL8K_TX_WMM_QUEUES + MWL8K_MAX_AMPDU_QUEUES)
104 #define mwl8k_tx_queues(priv) (MWL8K_TX_WMM_QUEUES + (priv)->num_ampdu_queues)
105
106 /* txpriorities are mapped with hw queues.
107 * Each hw queue has a txpriority.
108 */
109 #define TOTAL_HW_TX_QUEUES 8
110
111 /* Each HW queue can have one AMPDU stream.
112 * But, because one of the hw queue is reserved,
113 * maximum AMPDU queues that can be created are
114 * one short of total tx queues.
115 */
116 #define MWL8K_NUM_AMPDU_STREAMS (TOTAL_HW_TX_QUEUES - 1)
117
118 #define MWL8K_NUM_CHANS 18
119
120 struct rxd_ops {
121 int rxd_size;
122 void (*rxd_init)(void *rxd, dma_addr_t next_dma_addr);
123 void (*rxd_refill)(void *rxd, dma_addr_t addr, int len);
124 int (*rxd_process)(void *rxd, struct ieee80211_rx_status *status,
125 __le16 *qos, s8 *noise);
126 };
127
128 struct mwl8k_device_info {
129 char *part_name;
130 char *helper_image;
131 char *fw_image_sta;
132 char *fw_image_ap;
133 struct rxd_ops *ap_rxd_ops;
134 u32 fw_api_ap;
135 };
136
137 struct mwl8k_rx_queue {
138 int rxd_count;
139
140 /* hw receives here */
141 int head;
142
143 /* refill descs here */
144 int tail;
145
146 void *rxd;
147 dma_addr_t rxd_dma;
148 struct {
149 struct sk_buff *skb;
150 DEFINE_DMA_UNMAP_ADDR(dma);
151 } *buf;
152 };
153
154 struct mwl8k_tx_queue {
155 /* hw transmits here */
156 int head;
157
158 /* sw appends here */
159 int tail;
160
161 unsigned int len;
162 struct mwl8k_tx_desc *txd;
163 dma_addr_t txd_dma;
164 struct sk_buff **skb;
165 };
166
167 enum {
168 AMPDU_NO_STREAM,
169 AMPDU_STREAM_NEW,
170 AMPDU_STREAM_IN_PROGRESS,
171 AMPDU_STREAM_ACTIVE,
172 };
173
174 struct mwl8k_ampdu_stream {
175 struct ieee80211_sta *sta;
176 u8 tid;
177 u8 state;
178 u8 idx;
179 };
180
181 struct mwl8k_priv {
182 struct ieee80211_hw *hw;
183 struct pci_dev *pdev;
184 int irq;
185
186 struct mwl8k_device_info *device_info;
187
188 void __iomem *sram;
189 void __iomem *regs;
190
191 /* firmware */
192 const struct firmware *fw_helper;
193 const struct firmware *fw_ucode;
194
195 /* hardware/firmware parameters */
196 bool ap_fw;
197 struct rxd_ops *rxd_ops;
198 struct ieee80211_supported_band band_24;
199 struct ieee80211_channel channels_24[14];
200 struct ieee80211_rate rates_24[13];
201 struct ieee80211_supported_band band_50;
202 struct ieee80211_channel channels_50[4];
203 struct ieee80211_rate rates_50[8];
204 u32 ap_macids_supported;
205 u32 sta_macids_supported;
206
207 /* Ampdu stream information */
208 u8 num_ampdu_queues;
209 spinlock_t stream_lock;
210 struct mwl8k_ampdu_stream ampdu[MWL8K_MAX_AMPDU_QUEUES];
211 struct work_struct watchdog_ba_handle;
212
213 /* firmware access */
214 struct mutex fw_mutex;
215 struct task_struct *fw_mutex_owner;
216 struct task_struct *hw_restart_owner;
217 int fw_mutex_depth;
218 struct completion *hostcmd_wait;
219
220 atomic_t watchdog_event_pending;
221
222 /* lock held over TX and TX reap */
223 spinlock_t tx_lock;
224
225 /* TX quiesce completion, protected by fw_mutex and tx_lock */
226 struct completion *tx_wait;
227
228 /* List of interfaces. */
229 u32 macids_used;
230 struct list_head vif_list;
231
232 /* power management status cookie from firmware */
233 u32 *cookie;
234 dma_addr_t cookie_dma;
235
236 u16 num_mcaddrs;
237 u8 hw_rev;
238 u32 fw_rev;
239 u32 caps;
240
241 /*
242 * Running count of TX packets in flight, to avoid
243 * iterating over the transmit rings each time.
244 */
245 int pending_tx_pkts;
246
247 struct mwl8k_rx_queue rxq[MWL8K_RX_QUEUES];
248 struct mwl8k_tx_queue txq[MWL8K_MAX_TX_QUEUES];
249 u32 txq_offset[MWL8K_MAX_TX_QUEUES];
250
251 bool radio_on;
252 bool radio_short_preamble;
253 bool sniffer_enabled;
254 bool wmm_enabled;
255
256 /* XXX need to convert this to handle multiple interfaces */
257 bool capture_beacon;
258 u8 capture_bssid[ETH_ALEN];
259 struct sk_buff *beacon_skb;
260
261 /*
262 * This FJ worker has to be global as it is scheduled from the
263 * RX handler. At this point we don't know which interface it
264 * belongs to until the list of bssids waiting to complete join
265 * is checked.
266 */
267 struct work_struct finalize_join_worker;
268
269 /* Tasklet to perform TX reclaim. */
270 struct tasklet_struct poll_tx_task;
271
272 /* Tasklet to perform RX. */
273 struct tasklet_struct poll_rx_task;
274
275 /* Most recently reported noise in dBm */
276 s8 noise;
277
278 /*
279 * preserve the queue configurations so they can be restored if/when
280 * the firmware image is swapped.
281 */
282 struct ieee80211_tx_queue_params wmm_params[MWL8K_TX_WMM_QUEUES];
283
284 /* To perform the task of reloading the firmware */
285 struct work_struct fw_reload;
286 bool hw_restart_in_progress;
287
288 /* async firmware loading state */
289 unsigned fw_state;
290 char *fw_pref;
291 char *fw_alt;
292 bool is_8764;
293 struct completion firmware_loading_complete;
294
295 /* bitmap of running BSSes */
296 u32 running_bsses;
297
298 /* ACS related */
299 bool sw_scan_start;
300 struct ieee80211_channel *acs_chan;
301 unsigned long channel_time;
302 struct survey_info survey[MWL8K_NUM_CHANS];
303 };
304
305 #define MAX_WEP_KEY_LEN 13
306 #define NUM_WEP_KEYS 4
307
308 /* Per interface specific private data */
309 struct mwl8k_vif {
310 struct list_head list;
311 struct ieee80211_vif *vif;
312
313 /* Firmware macid for this vif. */
314 int macid;
315
316 /* Non AMPDU sequence number assigned by driver. */
317 u16 seqno;
318
319 /* Saved WEP keys */
320 struct {
321 u8 enabled;
322 u8 key[sizeof(struct ieee80211_key_conf) + MAX_WEP_KEY_LEN];
323 } wep_key_conf[NUM_WEP_KEYS];
324
325 /* BSSID */
326 u8 bssid[ETH_ALEN];
327
328 /* A flag to indicate is HW crypto is enabled for this bssid */
329 bool is_hw_crypto_enabled;
330 };
331 #define MWL8K_VIF(_vif) ((struct mwl8k_vif *)&((_vif)->drv_priv))
332 #define IEEE80211_KEY_CONF(_u8) ((struct ieee80211_key_conf *)(_u8))
333
334 struct tx_traffic_info {
335 u32 start_time;
336 u32 pkts;
337 };
338
339 #define MWL8K_MAX_TID 8
340 struct mwl8k_sta {
341 /* Index into station database. Returned by UPDATE_STADB. */
342 u8 peer_id;
343 u8 is_ampdu_allowed;
344 struct tx_traffic_info tx_stats[MWL8K_MAX_TID];
345 };
346 #define MWL8K_STA(_sta) ((struct mwl8k_sta *)&((_sta)->drv_priv))
347
348 static const struct ieee80211_channel mwl8k_channels_24[] = {
349 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2412, .hw_value = 1, },
350 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417, .hw_value = 2, },
351 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422, .hw_value = 3, },
352 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427, .hw_value = 4, },
353 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432, .hw_value = 5, },
354 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437, .hw_value = 6, },
355 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442, .hw_value = 7, },
356 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447, .hw_value = 8, },
357 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452, .hw_value = 9, },
358 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457, .hw_value = 10, },
359 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462, .hw_value = 11, },
360 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467, .hw_value = 12, },
361 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472, .hw_value = 13, },
362 { .band = IEEE80211_BAND_2GHZ, .center_freq = 2484, .hw_value = 14, },
363 };
364
365 static const struct ieee80211_rate mwl8k_rates_24[] = {
366 { .bitrate = 10, .hw_value = 2, },
367 { .bitrate = 20, .hw_value = 4, },
368 { .bitrate = 55, .hw_value = 11, },
369 { .bitrate = 110, .hw_value = 22, },
370 { .bitrate = 220, .hw_value = 44, },
371 { .bitrate = 60, .hw_value = 12, },
372 { .bitrate = 90, .hw_value = 18, },
373 { .bitrate = 120, .hw_value = 24, },
374 { .bitrate = 180, .hw_value = 36, },
375 { .bitrate = 240, .hw_value = 48, },
376 { .bitrate = 360, .hw_value = 72, },
377 { .bitrate = 480, .hw_value = 96, },
378 { .bitrate = 540, .hw_value = 108, },
379 };
380
381 static const struct ieee80211_channel mwl8k_channels_50[] = {
382 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5180, .hw_value = 36, },
383 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200, .hw_value = 40, },
384 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220, .hw_value = 44, },
385 { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240, .hw_value = 48, },
386 };
387
388 static const struct ieee80211_rate mwl8k_rates_50[] = {
389 { .bitrate = 60, .hw_value = 12, },
390 { .bitrate = 90, .hw_value = 18, },
391 { .bitrate = 120, .hw_value = 24, },
392 { .bitrate = 180, .hw_value = 36, },
393 { .bitrate = 240, .hw_value = 48, },
394 { .bitrate = 360, .hw_value = 72, },
395 { .bitrate = 480, .hw_value = 96, },
396 { .bitrate = 540, .hw_value = 108, },
397 };
398
399 /* Set or get info from Firmware */
400 #define MWL8K_CMD_GET 0x0000
401 #define MWL8K_CMD_SET 0x0001
402 #define MWL8K_CMD_SET_LIST 0x0002
403
404 /* Firmware command codes */
405 #define MWL8K_CMD_CODE_DNLD 0x0001
406 #define MWL8K_CMD_GET_HW_SPEC 0x0003
407 #define MWL8K_CMD_SET_HW_SPEC 0x0004
408 #define MWL8K_CMD_MAC_MULTICAST_ADR 0x0010
409 #define MWL8K_CMD_GET_STAT 0x0014
410 #define MWL8K_CMD_BBP_REG_ACCESS 0x001a
411 #define MWL8K_CMD_RADIO_CONTROL 0x001c
412 #define MWL8K_CMD_RF_TX_POWER 0x001e
413 #define MWL8K_CMD_TX_POWER 0x001f
414 #define MWL8K_CMD_RF_ANTENNA 0x0020
415 #define MWL8K_CMD_SET_BEACON 0x0100 /* per-vif */
416 #define MWL8K_CMD_SET_PRE_SCAN 0x0107
417 #define MWL8K_CMD_SET_POST_SCAN 0x0108
418 #define MWL8K_CMD_SET_RF_CHANNEL 0x010a
419 #define MWL8K_CMD_SET_AID 0x010d
420 #define MWL8K_CMD_SET_RATE 0x0110
421 #define MWL8K_CMD_SET_FINALIZE_JOIN 0x0111
422 #define MWL8K_CMD_RTS_THRESHOLD 0x0113
423 #define MWL8K_CMD_SET_SLOT 0x0114
424 #define MWL8K_CMD_SET_EDCA_PARAMS 0x0115
425 #define MWL8K_CMD_SET_WMM_MODE 0x0123
426 #define MWL8K_CMD_MIMO_CONFIG 0x0125
427 #define MWL8K_CMD_USE_FIXED_RATE 0x0126
428 #define MWL8K_CMD_ENABLE_SNIFFER 0x0150
429 #define MWL8K_CMD_SET_MAC_ADDR 0x0202 /* per-vif */
430 #define MWL8K_CMD_SET_RATEADAPT_MODE 0x0203
431 #define MWL8K_CMD_GET_WATCHDOG_BITMAP 0x0205
432 #define MWL8K_CMD_DEL_MAC_ADDR 0x0206 /* per-vif */
433 #define MWL8K_CMD_BSS_START 0x1100 /* per-vif */
434 #define MWL8K_CMD_SET_NEW_STN 0x1111 /* per-vif */
435 #define MWL8K_CMD_UPDATE_ENCRYPTION 0x1122 /* per-vif */
436 #define MWL8K_CMD_UPDATE_STADB 0x1123
437 #define MWL8K_CMD_BASTREAM 0x1125
438
439 static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize)
440 {
441 u16 command = le16_to_cpu(cmd);
442
443 #define MWL8K_CMDNAME(x) case MWL8K_CMD_##x: do {\
444 snprintf(buf, bufsize, "%s", #x);\
445 return buf;\
446 } while (0)
447 switch (command & ~0x8000) {
448 MWL8K_CMDNAME(CODE_DNLD);
449 MWL8K_CMDNAME(GET_HW_SPEC);
450 MWL8K_CMDNAME(SET_HW_SPEC);
451 MWL8K_CMDNAME(MAC_MULTICAST_ADR);
452 MWL8K_CMDNAME(GET_STAT);
453 MWL8K_CMDNAME(RADIO_CONTROL);
454 MWL8K_CMDNAME(RF_TX_POWER);
455 MWL8K_CMDNAME(TX_POWER);
456 MWL8K_CMDNAME(RF_ANTENNA);
457 MWL8K_CMDNAME(SET_BEACON);
458 MWL8K_CMDNAME(SET_PRE_SCAN);
459 MWL8K_CMDNAME(SET_POST_SCAN);
460 MWL8K_CMDNAME(SET_RF_CHANNEL);
461 MWL8K_CMDNAME(SET_AID);
462 MWL8K_CMDNAME(SET_RATE);
463 MWL8K_CMDNAME(SET_FINALIZE_JOIN);
464 MWL8K_CMDNAME(RTS_THRESHOLD);
465 MWL8K_CMDNAME(SET_SLOT);
466 MWL8K_CMDNAME(SET_EDCA_PARAMS);
467 MWL8K_CMDNAME(SET_WMM_MODE);
468 MWL8K_CMDNAME(MIMO_CONFIG);
469 MWL8K_CMDNAME(USE_FIXED_RATE);
470 MWL8K_CMDNAME(ENABLE_SNIFFER);
471 MWL8K_CMDNAME(SET_MAC_ADDR);
472 MWL8K_CMDNAME(SET_RATEADAPT_MODE);
473 MWL8K_CMDNAME(BSS_START);
474 MWL8K_CMDNAME(SET_NEW_STN);
475 MWL8K_CMDNAME(UPDATE_ENCRYPTION);
476 MWL8K_CMDNAME(UPDATE_STADB);
477 MWL8K_CMDNAME(BASTREAM);
478 MWL8K_CMDNAME(GET_WATCHDOG_BITMAP);
479 default:
480 snprintf(buf, bufsize, "0x%x", cmd);
481 }
482 #undef MWL8K_CMDNAME
483
484 return buf;
485 }
486
487 /* Hardware and firmware reset */
488 static void mwl8k_hw_reset(struct mwl8k_priv *priv)
489 {
490 iowrite32(MWL8K_H2A_INT_RESET,
491 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
492 iowrite32(MWL8K_H2A_INT_RESET,
493 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
494 msleep(20);
495 }
496
497 /* Release fw image */
498 static void mwl8k_release_fw(const struct firmware **fw)
499 {
500 if (*fw == NULL)
501 return;
502 release_firmware(*fw);
503 *fw = NULL;
504 }
505
506 static void mwl8k_release_firmware(struct mwl8k_priv *priv)
507 {
508 mwl8k_release_fw(&priv->fw_ucode);
509 mwl8k_release_fw(&priv->fw_helper);
510 }
511
512 /* states for asynchronous f/w loading */
513 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context);
514 enum {
515 FW_STATE_INIT = 0,
516 FW_STATE_LOADING_PREF,
517 FW_STATE_LOADING_ALT,
518 FW_STATE_ERROR,
519 };
520
521 /* Request fw image */
522 static int mwl8k_request_fw(struct mwl8k_priv *priv,
523 const char *fname, const struct firmware **fw,
524 bool nowait)
525 {
526 /* release current image */
527 if (*fw != NULL)
528 mwl8k_release_fw(fw);
529
530 if (nowait)
531 return request_firmware_nowait(THIS_MODULE, 1, fname,
532 &priv->pdev->dev, GFP_KERNEL,
533 priv, mwl8k_fw_state_machine);
534 else
535 return request_firmware(fw, fname, &priv->pdev->dev);
536 }
537
538 static int mwl8k_request_firmware(struct mwl8k_priv *priv, char *fw_image,
539 bool nowait)
540 {
541 struct mwl8k_device_info *di = priv->device_info;
542 int rc;
543
544 if (di->helper_image != NULL) {
545 if (nowait)
546 rc = mwl8k_request_fw(priv, di->helper_image,
547 &priv->fw_helper, true);
548 else
549 rc = mwl8k_request_fw(priv, di->helper_image,
550 &priv->fw_helper, false);
551 if (rc)
552 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
553 pci_name(priv->pdev), di->helper_image);
554
555 if (rc || nowait)
556 return rc;
557 }
558
559 if (nowait) {
560 /*
561 * if we get here, no helper image is needed. Skip the
562 * FW_STATE_INIT state.
563 */
564 priv->fw_state = FW_STATE_LOADING_PREF;
565 rc = mwl8k_request_fw(priv, fw_image,
566 &priv->fw_ucode,
567 true);
568 } else
569 rc = mwl8k_request_fw(priv, fw_image,
570 &priv->fw_ucode, false);
571 if (rc) {
572 printk(KERN_ERR "%s: Error requesting firmware file %s\n",
573 pci_name(priv->pdev), fw_image);
574 mwl8k_release_fw(&priv->fw_helper);
575 return rc;
576 }
577
578 return 0;
579 }
580
581 struct mwl8k_cmd_pkt {
582 __le16 code;
583 __le16 length;
584 __u8 seq_num;
585 __u8 macid;
586 __le16 result;
587 char payload[0];
588 } __packed;
589
590 /*
591 * Firmware loading.
592 */
593 static int
594 mwl8k_send_fw_load_cmd(struct mwl8k_priv *priv, void *data, int length)
595 {
596 void __iomem *regs = priv->regs;
597 dma_addr_t dma_addr;
598 int loops;
599
600 dma_addr = pci_map_single(priv->pdev, data, length, PCI_DMA_TODEVICE);
601 if (pci_dma_mapping_error(priv->pdev, dma_addr))
602 return -ENOMEM;
603
604 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
605 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
606 iowrite32(MWL8K_H2A_INT_DOORBELL,
607 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
608 iowrite32(MWL8K_H2A_INT_DUMMY,
609 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
610
611 loops = 1000;
612 do {
613 u32 int_code;
614 if (priv->is_8764) {
615 int_code = ioread32(regs +
616 MWL8K_HIU_H2A_INTERRUPT_STATUS);
617 if (int_code == 0)
618 break;
619 } else {
620 int_code = ioread32(regs + MWL8K_HIU_INT_CODE);
621 if (int_code == MWL8K_INT_CODE_CMD_FINISHED) {
622 iowrite32(0, regs + MWL8K_HIU_INT_CODE);
623 break;
624 }
625 }
626 cond_resched();
627 udelay(1);
628 } while (--loops);
629
630 pci_unmap_single(priv->pdev, dma_addr, length, PCI_DMA_TODEVICE);
631
632 return loops ? 0 : -ETIMEDOUT;
633 }
634
635 static int mwl8k_load_fw_image(struct mwl8k_priv *priv,
636 const u8 *data, size_t length)
637 {
638 struct mwl8k_cmd_pkt *cmd;
639 int done;
640 int rc = 0;
641
642 cmd = kmalloc(sizeof(*cmd) + 256, GFP_KERNEL);
643 if (cmd == NULL)
644 return -ENOMEM;
645
646 cmd->code = cpu_to_le16(MWL8K_CMD_CODE_DNLD);
647 cmd->seq_num = 0;
648 cmd->macid = 0;
649 cmd->result = 0;
650
651 done = 0;
652 while (length) {
653 int block_size = length > 256 ? 256 : length;
654
655 memcpy(cmd->payload, data + done, block_size);
656 cmd->length = cpu_to_le16(block_size);
657
658 rc = mwl8k_send_fw_load_cmd(priv, cmd,
659 sizeof(*cmd) + block_size);
660 if (rc)
661 break;
662
663 done += block_size;
664 length -= block_size;
665 }
666
667 if (!rc) {
668 cmd->length = 0;
669 rc = mwl8k_send_fw_load_cmd(priv, cmd, sizeof(*cmd));
670 }
671
672 kfree(cmd);
673
674 return rc;
675 }
676
677 static int mwl8k_feed_fw_image(struct mwl8k_priv *priv,
678 const u8 *data, size_t length)
679 {
680 unsigned char *buffer;
681 int may_continue, rc = 0;
682 u32 done, prev_block_size;
683
684 buffer = kmalloc(1024, GFP_KERNEL);
685 if (buffer == NULL)
686 return -ENOMEM;
687
688 done = 0;
689 prev_block_size = 0;
690 may_continue = 1000;
691 while (may_continue > 0) {
692 u32 block_size;
693
694 block_size = ioread32(priv->regs + MWL8K_HIU_SCRATCH);
695 if (block_size & 1) {
696 block_size &= ~1;
697 may_continue--;
698 } else {
699 done += prev_block_size;
700 length -= prev_block_size;
701 }
702
703 if (block_size > 1024 || block_size > length) {
704 rc = -EOVERFLOW;
705 break;
706 }
707
708 if (length == 0) {
709 rc = 0;
710 break;
711 }
712
713 if (block_size == 0) {
714 rc = -EPROTO;
715 may_continue--;
716 udelay(1);
717 continue;
718 }
719
720 prev_block_size = block_size;
721 memcpy(buffer, data + done, block_size);
722
723 rc = mwl8k_send_fw_load_cmd(priv, buffer, block_size);
724 if (rc)
725 break;
726 }
727
728 if (!rc && length != 0)
729 rc = -EREMOTEIO;
730
731 kfree(buffer);
732
733 return rc;
734 }
735
736 static int mwl8k_load_firmware(struct ieee80211_hw *hw)
737 {
738 struct mwl8k_priv *priv = hw->priv;
739 const struct firmware *fw = priv->fw_ucode;
740 int rc;
741 int loops;
742
743 if (!memcmp(fw->data, "\x01\x00\x00\x00", 4) && !priv->is_8764) {
744 const struct firmware *helper = priv->fw_helper;
745
746 if (helper == NULL) {
747 printk(KERN_ERR "%s: helper image needed but none "
748 "given\n", pci_name(priv->pdev));
749 return -EINVAL;
750 }
751
752 rc = mwl8k_load_fw_image(priv, helper->data, helper->size);
753 if (rc) {
754 printk(KERN_ERR "%s: unable to load firmware "
755 "helper image\n", pci_name(priv->pdev));
756 return rc;
757 }
758 msleep(20);
759
760 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
761 } else {
762 if (priv->is_8764)
763 rc = mwl8k_feed_fw_image(priv, fw->data, fw->size);
764 else
765 rc = mwl8k_load_fw_image(priv, fw->data, fw->size);
766 }
767
768 if (rc) {
769 printk(KERN_ERR "%s: unable to load firmware image\n",
770 pci_name(priv->pdev));
771 return rc;
772 }
773
774 iowrite32(MWL8K_MODE_STA, priv->regs + MWL8K_HIU_GEN_PTR);
775
776 loops = 500000;
777 do {
778 u32 ready_code;
779
780 ready_code = ioread32(priv->regs + MWL8K_HIU_INT_CODE);
781 if (ready_code == MWL8K_FWAP_READY) {
782 priv->ap_fw = true;
783 break;
784 } else if (ready_code == MWL8K_FWSTA_READY) {
785 priv->ap_fw = false;
786 break;
787 }
788
789 cond_resched();
790 udelay(1);
791 } while (--loops);
792
793 return loops ? 0 : -ETIMEDOUT;
794 }
795
796
797 /* DMA header used by firmware and hardware. */
798 struct mwl8k_dma_data {
799 __le16 fwlen;
800 struct ieee80211_hdr wh;
801 char data[0];
802 } __packed;
803
804 /* Routines to add/remove DMA header from skb. */
805 static inline void mwl8k_remove_dma_header(struct sk_buff *skb, __le16 qos)
806 {
807 struct mwl8k_dma_data *tr;
808 int hdrlen;
809
810 tr = (struct mwl8k_dma_data *)skb->data;
811 hdrlen = ieee80211_hdrlen(tr->wh.frame_control);
812
813 if (hdrlen != sizeof(tr->wh)) {
814 if (ieee80211_is_data_qos(tr->wh.frame_control)) {
815 memmove(tr->data - hdrlen, &tr->wh, hdrlen - 2);
816 *((__le16 *)(tr->data - 2)) = qos;
817 } else {
818 memmove(tr->data - hdrlen, &tr->wh, hdrlen);
819 }
820 }
821
822 if (hdrlen != sizeof(*tr))
823 skb_pull(skb, sizeof(*tr) - hdrlen);
824 }
825
826 #define REDUCED_TX_HEADROOM 8
827
828 static void
829 mwl8k_add_dma_header(struct mwl8k_priv *priv, struct sk_buff *skb,
830 int head_pad, int tail_pad)
831 {
832 struct ieee80211_hdr *wh;
833 int hdrlen;
834 int reqd_hdrlen;
835 struct mwl8k_dma_data *tr;
836
837 /*
838 * Add a firmware DMA header; the firmware requires that we
839 * present a 2-byte payload length followed by a 4-address
840 * header (without QoS field), followed (optionally) by any
841 * WEP/ExtIV header (but only filled in for CCMP).
842 */
843 wh = (struct ieee80211_hdr *)skb->data;
844
845 hdrlen = ieee80211_hdrlen(wh->frame_control);
846
847 /*
848 * Check if skb_resize is required because of
849 * tx_headroom adjustment.
850 */
851 if (priv->ap_fw && (hdrlen < (sizeof(struct ieee80211_cts)
852 + REDUCED_TX_HEADROOM))) {
853 if (pskb_expand_head(skb, REDUCED_TX_HEADROOM, 0, GFP_ATOMIC)) {
854
855 wiphy_err(priv->hw->wiphy,
856 "Failed to reallocate TX buffer\n");
857 return;
858 }
859 skb->truesize += REDUCED_TX_HEADROOM;
860 }
861
862 reqd_hdrlen = sizeof(*tr) + head_pad;
863
864 if (hdrlen != reqd_hdrlen)
865 skb_push(skb, reqd_hdrlen - hdrlen);
866
867 if (ieee80211_is_data_qos(wh->frame_control))
868 hdrlen -= IEEE80211_QOS_CTL_LEN;
869
870 tr = (struct mwl8k_dma_data *)skb->data;
871 if (wh != &tr->wh)
872 memmove(&tr->wh, wh, hdrlen);
873 if (hdrlen != sizeof(tr->wh))
874 memset(((void *)&tr->wh) + hdrlen, 0, sizeof(tr->wh) - hdrlen);
875
876 /*
877 * Firmware length is the length of the fully formed "802.11
878 * payload". That is, everything except for the 802.11 header.
879 * This includes all crypto material including the MIC.
880 */
881 tr->fwlen = cpu_to_le16(skb->len - sizeof(*tr) + tail_pad);
882 }
883
884 static void mwl8k_encapsulate_tx_frame(struct mwl8k_priv *priv,
885 struct sk_buff *skb)
886 {
887 struct ieee80211_hdr *wh;
888 struct ieee80211_tx_info *tx_info;
889 struct ieee80211_key_conf *key_conf;
890 int data_pad;
891 int head_pad = 0;
892
893 wh = (struct ieee80211_hdr *)skb->data;
894
895 tx_info = IEEE80211_SKB_CB(skb);
896
897 key_conf = NULL;
898 if (ieee80211_is_data(wh->frame_control))
899 key_conf = tx_info->control.hw_key;
900
901 /*
902 * Make sure the packet header is in the DMA header format (4-address
903 * without QoS), and add head & tail padding when HW crypto is enabled.
904 *
905 * We have the following trailer padding requirements:
906 * - WEP: 4 trailer bytes (ICV)
907 * - TKIP: 12 trailer bytes (8 MIC + 4 ICV)
908 * - CCMP: 8 trailer bytes (MIC)
909 */
910 data_pad = 0;
911 if (key_conf != NULL) {
912 head_pad = key_conf->iv_len;
913 switch (key_conf->cipher) {
914 case WLAN_CIPHER_SUITE_WEP40:
915 case WLAN_CIPHER_SUITE_WEP104:
916 data_pad = 4;
917 break;
918 case WLAN_CIPHER_SUITE_TKIP:
919 data_pad = 12;
920 break;
921 case WLAN_CIPHER_SUITE_CCMP:
922 data_pad = 8;
923 break;
924 }
925 }
926 mwl8k_add_dma_header(priv, skb, head_pad, data_pad);
927 }
928
929 /*
930 * Packet reception for 88w8366/88w8764 AP firmware.
931 */
932 struct mwl8k_rxd_ap {
933 __le16 pkt_len;
934 __u8 sq2;
935 __u8 rate;
936 __le32 pkt_phys_addr;
937 __le32 next_rxd_phys_addr;
938 __le16 qos_control;
939 __le16 htsig2;
940 __le32 hw_rssi_info;
941 __le32 hw_noise_floor_info;
942 __u8 noise_floor;
943 __u8 pad0[3];
944 __u8 rssi;
945 __u8 rx_status;
946 __u8 channel;
947 __u8 rx_ctrl;
948 } __packed;
949
950 #define MWL8K_AP_RATE_INFO_MCS_FORMAT 0x80
951 #define MWL8K_AP_RATE_INFO_40MHZ 0x40
952 #define MWL8K_AP_RATE_INFO_RATEID(x) ((x) & 0x3f)
953
954 #define MWL8K_AP_RX_CTRL_OWNED_BY_HOST 0x80
955
956 /* 8366/8764 AP rx_status bits */
957 #define MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK 0x80
958 #define MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR 0xFF
959 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR 0x02
960 #define MWL8K_AP_RXSTAT_WEP_DECRYPT_ICV_ERR 0x04
961 #define MWL8K_AP_RXSTAT_TKIP_DECRYPT_ICV_ERR 0x08
962
963 static void mwl8k_rxd_ap_init(void *_rxd, dma_addr_t next_dma_addr)
964 {
965 struct mwl8k_rxd_ap *rxd = _rxd;
966
967 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
968 rxd->rx_ctrl = MWL8K_AP_RX_CTRL_OWNED_BY_HOST;
969 }
970
971 static void mwl8k_rxd_ap_refill(void *_rxd, dma_addr_t addr, int len)
972 {
973 struct mwl8k_rxd_ap *rxd = _rxd;
974
975 rxd->pkt_len = cpu_to_le16(len);
976 rxd->pkt_phys_addr = cpu_to_le32(addr);
977 wmb();
978 rxd->rx_ctrl = 0;
979 }
980
981 static int
982 mwl8k_rxd_ap_process(void *_rxd, struct ieee80211_rx_status *status,
983 __le16 *qos, s8 *noise)
984 {
985 struct mwl8k_rxd_ap *rxd = _rxd;
986
987 if (!(rxd->rx_ctrl & MWL8K_AP_RX_CTRL_OWNED_BY_HOST))
988 return -1;
989 rmb();
990
991 memset(status, 0, sizeof(*status));
992
993 status->signal = -rxd->rssi;
994 *noise = -rxd->noise_floor;
995
996 if (rxd->rate & MWL8K_AP_RATE_INFO_MCS_FORMAT) {
997 status->flag |= RX_FLAG_HT;
998 if (rxd->rate & MWL8K_AP_RATE_INFO_40MHZ)
999 status->flag |= RX_FLAG_40MHZ;
1000 status->rate_idx = MWL8K_AP_RATE_INFO_RATEID(rxd->rate);
1001 } else {
1002 int i;
1003
1004 for (i = 0; i < ARRAY_SIZE(mwl8k_rates_24); i++) {
1005 if (mwl8k_rates_24[i].hw_value == rxd->rate) {
1006 status->rate_idx = i;
1007 break;
1008 }
1009 }
1010 }
1011
1012 if (rxd->channel > 14) {
1013 status->band = IEEE80211_BAND_5GHZ;
1014 if (!(status->flag & RX_FLAG_HT))
1015 status->rate_idx -= 5;
1016 } else {
1017 status->band = IEEE80211_BAND_2GHZ;
1018 }
1019 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1020 status->band);
1021
1022 *qos = rxd->qos_control;
1023
1024 if ((rxd->rx_status != MWL8K_AP_RXSTAT_GENERAL_DECRYPT_ERR) &&
1025 (rxd->rx_status & MWL8K_AP_RXSTAT_DECRYPT_ERR_MASK) &&
1026 (rxd->rx_status & MWL8K_AP_RXSTAT_TKIP_DECRYPT_MIC_ERR))
1027 status->flag |= RX_FLAG_MMIC_ERROR;
1028
1029 return le16_to_cpu(rxd->pkt_len);
1030 }
1031
1032 static struct rxd_ops rxd_ap_ops = {
1033 .rxd_size = sizeof(struct mwl8k_rxd_ap),
1034 .rxd_init = mwl8k_rxd_ap_init,
1035 .rxd_refill = mwl8k_rxd_ap_refill,
1036 .rxd_process = mwl8k_rxd_ap_process,
1037 };
1038
1039 /*
1040 * Packet reception for STA firmware.
1041 */
1042 struct mwl8k_rxd_sta {
1043 __le16 pkt_len;
1044 __u8 link_quality;
1045 __u8 noise_level;
1046 __le32 pkt_phys_addr;
1047 __le32 next_rxd_phys_addr;
1048 __le16 qos_control;
1049 __le16 rate_info;
1050 __le32 pad0[4];
1051 __u8 rssi;
1052 __u8 channel;
1053 __le16 pad1;
1054 __u8 rx_ctrl;
1055 __u8 rx_status;
1056 __u8 pad2[2];
1057 } __packed;
1058
1059 #define MWL8K_STA_RATE_INFO_SHORTPRE 0x8000
1060 #define MWL8K_STA_RATE_INFO_ANTSELECT(x) (((x) >> 11) & 0x3)
1061 #define MWL8K_STA_RATE_INFO_RATEID(x) (((x) >> 3) & 0x3f)
1062 #define MWL8K_STA_RATE_INFO_40MHZ 0x0004
1063 #define MWL8K_STA_RATE_INFO_SHORTGI 0x0002
1064 #define MWL8K_STA_RATE_INFO_MCS_FORMAT 0x0001
1065
1066 #define MWL8K_STA_RX_CTRL_OWNED_BY_HOST 0x02
1067 #define MWL8K_STA_RX_CTRL_DECRYPT_ERROR 0x04
1068 /* ICV=0 or MIC=1 */
1069 #define MWL8K_STA_RX_CTRL_DEC_ERR_TYPE 0x08
1070 /* Key is uploaded only in failure case */
1071 #define MWL8K_STA_RX_CTRL_KEY_INDEX 0x30
1072
1073 static void mwl8k_rxd_sta_init(void *_rxd, dma_addr_t next_dma_addr)
1074 {
1075 struct mwl8k_rxd_sta *rxd = _rxd;
1076
1077 rxd->next_rxd_phys_addr = cpu_to_le32(next_dma_addr);
1078 rxd->rx_ctrl = MWL8K_STA_RX_CTRL_OWNED_BY_HOST;
1079 }
1080
1081 static void mwl8k_rxd_sta_refill(void *_rxd, dma_addr_t addr, int len)
1082 {
1083 struct mwl8k_rxd_sta *rxd = _rxd;
1084
1085 rxd->pkt_len = cpu_to_le16(len);
1086 rxd->pkt_phys_addr = cpu_to_le32(addr);
1087 wmb();
1088 rxd->rx_ctrl = 0;
1089 }
1090
1091 static int
1092 mwl8k_rxd_sta_process(void *_rxd, struct ieee80211_rx_status *status,
1093 __le16 *qos, s8 *noise)
1094 {
1095 struct mwl8k_rxd_sta *rxd = _rxd;
1096 u16 rate_info;
1097
1098 if (!(rxd->rx_ctrl & MWL8K_STA_RX_CTRL_OWNED_BY_HOST))
1099 return -1;
1100 rmb();
1101
1102 rate_info = le16_to_cpu(rxd->rate_info);
1103
1104 memset(status, 0, sizeof(*status));
1105
1106 status->signal = -rxd->rssi;
1107 *noise = -rxd->noise_level;
1108 status->antenna = MWL8K_STA_RATE_INFO_ANTSELECT(rate_info);
1109 status->rate_idx = MWL8K_STA_RATE_INFO_RATEID(rate_info);
1110
1111 if (rate_info & MWL8K_STA_RATE_INFO_SHORTPRE)
1112 status->flag |= RX_FLAG_SHORTPRE;
1113 if (rate_info & MWL8K_STA_RATE_INFO_40MHZ)
1114 status->flag |= RX_FLAG_40MHZ;
1115 if (rate_info & MWL8K_STA_RATE_INFO_SHORTGI)
1116 status->flag |= RX_FLAG_SHORT_GI;
1117 if (rate_info & MWL8K_STA_RATE_INFO_MCS_FORMAT)
1118 status->flag |= RX_FLAG_HT;
1119
1120 if (rxd->channel > 14) {
1121 status->band = IEEE80211_BAND_5GHZ;
1122 if (!(status->flag & RX_FLAG_HT))
1123 status->rate_idx -= 5;
1124 } else {
1125 status->band = IEEE80211_BAND_2GHZ;
1126 }
1127 status->freq = ieee80211_channel_to_frequency(rxd->channel,
1128 status->band);
1129
1130 *qos = rxd->qos_control;
1131 if ((rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DECRYPT_ERROR) &&
1132 (rxd->rx_ctrl & MWL8K_STA_RX_CTRL_DEC_ERR_TYPE))
1133 status->flag |= RX_FLAG_MMIC_ERROR;
1134
1135 return le16_to_cpu(rxd->pkt_len);
1136 }
1137
1138 static struct rxd_ops rxd_sta_ops = {
1139 .rxd_size = sizeof(struct mwl8k_rxd_sta),
1140 .rxd_init = mwl8k_rxd_sta_init,
1141 .rxd_refill = mwl8k_rxd_sta_refill,
1142 .rxd_process = mwl8k_rxd_sta_process,
1143 };
1144
1145
1146 #define MWL8K_RX_DESCS 256
1147 #define MWL8K_RX_MAXSZ 3800
1148
1149 static int mwl8k_rxq_init(struct ieee80211_hw *hw, int index)
1150 {
1151 struct mwl8k_priv *priv = hw->priv;
1152 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1153 int size;
1154 int i;
1155
1156 rxq->rxd_count = 0;
1157 rxq->head = 0;
1158 rxq->tail = 0;
1159
1160 size = MWL8K_RX_DESCS * priv->rxd_ops->rxd_size;
1161
1162 rxq->rxd = pci_zalloc_consistent(priv->pdev, size, &rxq->rxd_dma);
1163 if (rxq->rxd == NULL) {
1164 wiphy_err(hw->wiphy, "failed to alloc RX descriptors\n");
1165 return -ENOMEM;
1166 }
1167
1168 rxq->buf = kcalloc(MWL8K_RX_DESCS, sizeof(*rxq->buf), GFP_KERNEL);
1169 if (rxq->buf == NULL) {
1170 pci_free_consistent(priv->pdev, size, rxq->rxd, rxq->rxd_dma);
1171 return -ENOMEM;
1172 }
1173
1174 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1175 int desc_size;
1176 void *rxd;
1177 int nexti;
1178 dma_addr_t next_dma_addr;
1179
1180 desc_size = priv->rxd_ops->rxd_size;
1181 rxd = rxq->rxd + (i * priv->rxd_ops->rxd_size);
1182
1183 nexti = i + 1;
1184 if (nexti == MWL8K_RX_DESCS)
1185 nexti = 0;
1186 next_dma_addr = rxq->rxd_dma + (nexti * desc_size);
1187
1188 priv->rxd_ops->rxd_init(rxd, next_dma_addr);
1189 }
1190
1191 return 0;
1192 }
1193
1194 static int rxq_refill(struct ieee80211_hw *hw, int index, int limit)
1195 {
1196 struct mwl8k_priv *priv = hw->priv;
1197 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1198 int refilled;
1199
1200 refilled = 0;
1201 while (rxq->rxd_count < MWL8K_RX_DESCS && limit--) {
1202 struct sk_buff *skb;
1203 dma_addr_t addr;
1204 int rx;
1205 void *rxd;
1206
1207 skb = dev_alloc_skb(MWL8K_RX_MAXSZ);
1208 if (skb == NULL)
1209 break;
1210
1211 addr = pci_map_single(priv->pdev, skb->data,
1212 MWL8K_RX_MAXSZ, DMA_FROM_DEVICE);
1213
1214 rxq->rxd_count++;
1215 rx = rxq->tail++;
1216 if (rxq->tail == MWL8K_RX_DESCS)
1217 rxq->tail = 0;
1218 rxq->buf[rx].skb = skb;
1219 dma_unmap_addr_set(&rxq->buf[rx], dma, addr);
1220
1221 rxd = rxq->rxd + (rx * priv->rxd_ops->rxd_size);
1222 priv->rxd_ops->rxd_refill(rxd, addr, MWL8K_RX_MAXSZ);
1223
1224 refilled++;
1225 }
1226
1227 return refilled;
1228 }
1229
1230 /* Must be called only when the card's reception is completely halted */
1231 static void mwl8k_rxq_deinit(struct ieee80211_hw *hw, int index)
1232 {
1233 struct mwl8k_priv *priv = hw->priv;
1234 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1235 int i;
1236
1237 if (rxq->rxd == NULL)
1238 return;
1239
1240 for (i = 0; i < MWL8K_RX_DESCS; i++) {
1241 if (rxq->buf[i].skb != NULL) {
1242 pci_unmap_single(priv->pdev,
1243 dma_unmap_addr(&rxq->buf[i], dma),
1244 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1245 dma_unmap_addr_set(&rxq->buf[i], dma, 0);
1246
1247 kfree_skb(rxq->buf[i].skb);
1248 rxq->buf[i].skb = NULL;
1249 }
1250 }
1251
1252 kfree(rxq->buf);
1253 rxq->buf = NULL;
1254
1255 pci_free_consistent(priv->pdev,
1256 MWL8K_RX_DESCS * priv->rxd_ops->rxd_size,
1257 rxq->rxd, rxq->rxd_dma);
1258 rxq->rxd = NULL;
1259 }
1260
1261
1262 /*
1263 * Scan a list of BSSIDs to process for finalize join.
1264 * Allows for extension to process multiple BSSIDs.
1265 */
1266 static inline int
1267 mwl8k_capture_bssid(struct mwl8k_priv *priv, struct ieee80211_hdr *wh)
1268 {
1269 return priv->capture_beacon &&
1270 ieee80211_is_beacon(wh->frame_control) &&
1271 ether_addr_equal_64bits(wh->addr3, priv->capture_bssid);
1272 }
1273
1274 static inline void mwl8k_save_beacon(struct ieee80211_hw *hw,
1275 struct sk_buff *skb)
1276 {
1277 struct mwl8k_priv *priv = hw->priv;
1278
1279 priv->capture_beacon = false;
1280 memset(priv->capture_bssid, 0, ETH_ALEN);
1281
1282 /*
1283 * Use GFP_ATOMIC as rxq_process is called from
1284 * the primary interrupt handler, memory allocation call
1285 * must not sleep.
1286 */
1287 priv->beacon_skb = skb_copy(skb, GFP_ATOMIC);
1288 if (priv->beacon_skb != NULL)
1289 ieee80211_queue_work(hw, &priv->finalize_join_worker);
1290 }
1291
1292 static inline struct mwl8k_vif *mwl8k_find_vif_bss(struct list_head *vif_list,
1293 u8 *bssid)
1294 {
1295 struct mwl8k_vif *mwl8k_vif;
1296
1297 list_for_each_entry(mwl8k_vif,
1298 vif_list, list) {
1299 if (memcmp(bssid, mwl8k_vif->bssid,
1300 ETH_ALEN) == 0)
1301 return mwl8k_vif;
1302 }
1303
1304 return NULL;
1305 }
1306
1307 static int rxq_process(struct ieee80211_hw *hw, int index, int limit)
1308 {
1309 struct mwl8k_priv *priv = hw->priv;
1310 struct mwl8k_vif *mwl8k_vif = NULL;
1311 struct mwl8k_rx_queue *rxq = priv->rxq + index;
1312 int processed;
1313
1314 processed = 0;
1315 while (rxq->rxd_count && limit--) {
1316 struct sk_buff *skb;
1317 void *rxd;
1318 int pkt_len;
1319 struct ieee80211_rx_status status;
1320 struct ieee80211_hdr *wh;
1321 __le16 qos;
1322
1323 skb = rxq->buf[rxq->head].skb;
1324 if (skb == NULL)
1325 break;
1326
1327 rxd = rxq->rxd + (rxq->head * priv->rxd_ops->rxd_size);
1328
1329 pkt_len = priv->rxd_ops->rxd_process(rxd, &status, &qos,
1330 &priv->noise);
1331 if (pkt_len < 0)
1332 break;
1333
1334 rxq->buf[rxq->head].skb = NULL;
1335
1336 pci_unmap_single(priv->pdev,
1337 dma_unmap_addr(&rxq->buf[rxq->head], dma),
1338 MWL8K_RX_MAXSZ, PCI_DMA_FROMDEVICE);
1339 dma_unmap_addr_set(&rxq->buf[rxq->head], dma, 0);
1340
1341 rxq->head++;
1342 if (rxq->head == MWL8K_RX_DESCS)
1343 rxq->head = 0;
1344
1345 rxq->rxd_count--;
1346
1347 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1348
1349 /*
1350 * Check for a pending join operation. Save a
1351 * copy of the beacon and schedule a tasklet to
1352 * send a FINALIZE_JOIN command to the firmware.
1353 */
1354 if (mwl8k_capture_bssid(priv, (void *)skb->data))
1355 mwl8k_save_beacon(hw, skb);
1356
1357 if (ieee80211_has_protected(wh->frame_control)) {
1358
1359 /* Check if hw crypto has been enabled for
1360 * this bss. If yes, set the status flags
1361 * accordingly
1362 */
1363 mwl8k_vif = mwl8k_find_vif_bss(&priv->vif_list,
1364 wh->addr1);
1365
1366 if (mwl8k_vif != NULL &&
1367 mwl8k_vif->is_hw_crypto_enabled) {
1368 /*
1369 * When MMIC ERROR is encountered
1370 * by the firmware, payload is
1371 * dropped and only 32 bytes of
1372 * mwl8k Firmware header is sent
1373 * to the host.
1374 *
1375 * We need to add four bytes of
1376 * key information. In it
1377 * MAC80211 expects keyidx set to
1378 * 0 for triggering Counter
1379 * Measure of MMIC failure.
1380 */
1381 if (status.flag & RX_FLAG_MMIC_ERROR) {
1382 struct mwl8k_dma_data *tr;
1383 tr = (struct mwl8k_dma_data *)skb->data;
1384 memset((void *)&(tr->data), 0, 4);
1385 pkt_len += 4;
1386 }
1387
1388 if (!ieee80211_is_auth(wh->frame_control))
1389 status.flag |= RX_FLAG_IV_STRIPPED |
1390 RX_FLAG_DECRYPTED |
1391 RX_FLAG_MMIC_STRIPPED;
1392 }
1393 }
1394
1395 skb_put(skb, pkt_len);
1396 mwl8k_remove_dma_header(skb, qos);
1397 memcpy(IEEE80211_SKB_RXCB(skb), &status, sizeof(status));
1398 ieee80211_rx_irqsafe(hw, skb);
1399
1400 processed++;
1401 }
1402
1403 return processed;
1404 }
1405
1406
1407 /*
1408 * Packet transmission.
1409 */
1410
1411 #define MWL8K_TXD_STATUS_OK 0x00000001
1412 #define MWL8K_TXD_STATUS_OK_RETRY 0x00000002
1413 #define MWL8K_TXD_STATUS_OK_MORE_RETRY 0x00000004
1414 #define MWL8K_TXD_STATUS_MULTICAST_TX 0x00000008
1415 #define MWL8K_TXD_STATUS_FW_OWNED 0x80000000
1416
1417 #define MWL8K_QOS_QLEN_UNSPEC 0xff00
1418 #define MWL8K_QOS_ACK_POLICY_MASK 0x0060
1419 #define MWL8K_QOS_ACK_POLICY_NORMAL 0x0000
1420 #define MWL8K_QOS_ACK_POLICY_BLOCKACK 0x0060
1421 #define MWL8K_QOS_EOSP 0x0010
1422
1423 struct mwl8k_tx_desc {
1424 __le32 status;
1425 __u8 data_rate;
1426 __u8 tx_priority;
1427 __le16 qos_control;
1428 __le32 pkt_phys_addr;
1429 __le16 pkt_len;
1430 __u8 dest_MAC_addr[ETH_ALEN];
1431 __le32 next_txd_phys_addr;
1432 __le32 timestamp;
1433 __le16 rate_info;
1434 __u8 peer_id;
1435 __u8 tx_frag_cnt;
1436 } __packed;
1437
1438 #define MWL8K_TX_DESCS 128
1439
1440 static int mwl8k_txq_init(struct ieee80211_hw *hw, int index)
1441 {
1442 struct mwl8k_priv *priv = hw->priv;
1443 struct mwl8k_tx_queue *txq = priv->txq + index;
1444 int size;
1445 int i;
1446
1447 txq->len = 0;
1448 txq->head = 0;
1449 txq->tail = 0;
1450
1451 size = MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc);
1452
1453 txq->txd = pci_zalloc_consistent(priv->pdev, size, &txq->txd_dma);
1454 if (txq->txd == NULL) {
1455 wiphy_err(hw->wiphy, "failed to alloc TX descriptors\n");
1456 return -ENOMEM;
1457 }
1458
1459 txq->skb = kcalloc(MWL8K_TX_DESCS, sizeof(*txq->skb), GFP_KERNEL);
1460 if (txq->skb == NULL) {
1461 pci_free_consistent(priv->pdev, size, txq->txd, txq->txd_dma);
1462 return -ENOMEM;
1463 }
1464
1465 for (i = 0; i < MWL8K_TX_DESCS; i++) {
1466 struct mwl8k_tx_desc *tx_desc;
1467 int nexti;
1468
1469 tx_desc = txq->txd + i;
1470 nexti = (i + 1) % MWL8K_TX_DESCS;
1471
1472 tx_desc->status = 0;
1473 tx_desc->next_txd_phys_addr =
1474 cpu_to_le32(txq->txd_dma + nexti * sizeof(*tx_desc));
1475 }
1476
1477 return 0;
1478 }
1479
1480 static inline void mwl8k_tx_start(struct mwl8k_priv *priv)
1481 {
1482 iowrite32(MWL8K_H2A_INT_PPA_READY,
1483 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1484 iowrite32(MWL8K_H2A_INT_DUMMY,
1485 priv->regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
1486 ioread32(priv->regs + MWL8K_HIU_INT_CODE);
1487 }
1488
1489 static void mwl8k_dump_tx_rings(struct ieee80211_hw *hw)
1490 {
1491 struct mwl8k_priv *priv = hw->priv;
1492 int i;
1493
1494 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
1495 struct mwl8k_tx_queue *txq = priv->txq + i;
1496 int fw_owned = 0;
1497 int drv_owned = 0;
1498 int unused = 0;
1499 int desc;
1500
1501 for (desc = 0; desc < MWL8K_TX_DESCS; desc++) {
1502 struct mwl8k_tx_desc *tx_desc = txq->txd + desc;
1503 u32 status;
1504
1505 status = le32_to_cpu(tx_desc->status);
1506 if (status & MWL8K_TXD_STATUS_FW_OWNED)
1507 fw_owned++;
1508 else
1509 drv_owned++;
1510
1511 if (tx_desc->pkt_len == 0)
1512 unused++;
1513 }
1514
1515 wiphy_err(hw->wiphy,
1516 "txq[%d] len=%d head=%d tail=%d "
1517 "fw_owned=%d drv_owned=%d unused=%d\n",
1518 i,
1519 txq->len, txq->head, txq->tail,
1520 fw_owned, drv_owned, unused);
1521 }
1522 }
1523
1524 /*
1525 * Must be called with priv->fw_mutex held and tx queues stopped.
1526 */
1527 #define MWL8K_TX_WAIT_TIMEOUT_MS 5000
1528
1529 static int mwl8k_tx_wait_empty(struct ieee80211_hw *hw)
1530 {
1531 struct mwl8k_priv *priv = hw->priv;
1532 DECLARE_COMPLETION_ONSTACK(tx_wait);
1533 int retry;
1534 int rc;
1535
1536 might_sleep();
1537
1538 /* Since fw restart is in progress, allow only the firmware
1539 * commands from the restart code and block the other
1540 * commands since they are going to fail in any case since
1541 * the firmware has crashed
1542 */
1543 if (priv->hw_restart_in_progress) {
1544 if (priv->hw_restart_owner == current)
1545 return 0;
1546 else
1547 return -EBUSY;
1548 }
1549
1550 if (atomic_read(&priv->watchdog_event_pending))
1551 return 0;
1552
1553 /*
1554 * The TX queues are stopped at this point, so this test
1555 * doesn't need to take ->tx_lock.
1556 */
1557 if (!priv->pending_tx_pkts)
1558 return 0;
1559
1560 retry = 1;
1561 rc = 0;
1562
1563 spin_lock_bh(&priv->tx_lock);
1564 priv->tx_wait = &tx_wait;
1565 while (!rc) {
1566 int oldcount;
1567 unsigned long timeout;
1568
1569 oldcount = priv->pending_tx_pkts;
1570
1571 spin_unlock_bh(&priv->tx_lock);
1572 timeout = wait_for_completion_timeout(&tx_wait,
1573 msecs_to_jiffies(MWL8K_TX_WAIT_TIMEOUT_MS));
1574
1575 if (atomic_read(&priv->watchdog_event_pending)) {
1576 spin_lock_bh(&priv->tx_lock);
1577 priv->tx_wait = NULL;
1578 spin_unlock_bh(&priv->tx_lock);
1579 return 0;
1580 }
1581
1582 spin_lock_bh(&priv->tx_lock);
1583
1584 if (timeout || !priv->pending_tx_pkts) {
1585 WARN_ON(priv->pending_tx_pkts);
1586 if (retry)
1587 wiphy_notice(hw->wiphy, "tx rings drained\n");
1588 break;
1589 }
1590
1591 if (retry) {
1592 mwl8k_tx_start(priv);
1593 retry = 0;
1594 continue;
1595 }
1596
1597 if (priv->pending_tx_pkts < oldcount) {
1598 wiphy_notice(hw->wiphy,
1599 "waiting for tx rings to drain (%d -> %d pkts)\n",
1600 oldcount, priv->pending_tx_pkts);
1601 retry = 1;
1602 continue;
1603 }
1604
1605 priv->tx_wait = NULL;
1606
1607 wiphy_err(hw->wiphy, "tx rings stuck for %d ms\n",
1608 MWL8K_TX_WAIT_TIMEOUT_MS);
1609 mwl8k_dump_tx_rings(hw);
1610 priv->hw_restart_in_progress = true;
1611 ieee80211_queue_work(hw, &priv->fw_reload);
1612
1613 rc = -ETIMEDOUT;
1614 }
1615 priv->tx_wait = NULL;
1616 spin_unlock_bh(&priv->tx_lock);
1617
1618 return rc;
1619 }
1620
1621 #define MWL8K_TXD_SUCCESS(status) \
1622 ((status) & (MWL8K_TXD_STATUS_OK | \
1623 MWL8K_TXD_STATUS_OK_RETRY | \
1624 MWL8K_TXD_STATUS_OK_MORE_RETRY))
1625
1626 static int mwl8k_tid_queue_mapping(u8 tid)
1627 {
1628 BUG_ON(tid > 7);
1629
1630 switch (tid) {
1631 case 0:
1632 case 3:
1633 return IEEE80211_AC_BE;
1634 case 1:
1635 case 2:
1636 return IEEE80211_AC_BK;
1637 case 4:
1638 case 5:
1639 return IEEE80211_AC_VI;
1640 case 6:
1641 case 7:
1642 return IEEE80211_AC_VO;
1643 default:
1644 return -1;
1645 }
1646 }
1647
1648 /* The firmware will fill in the rate information
1649 * for each packet that gets queued in the hardware
1650 * and these macros will interpret that info.
1651 */
1652
1653 #define RI_FORMAT(a) (a & 0x0001)
1654 #define RI_RATE_ID_MCS(a) ((a & 0x01f8) >> 3)
1655
1656 static int
1657 mwl8k_txq_reclaim(struct ieee80211_hw *hw, int index, int limit, int force)
1658 {
1659 struct mwl8k_priv *priv = hw->priv;
1660 struct mwl8k_tx_queue *txq = priv->txq + index;
1661 int processed;
1662
1663 processed = 0;
1664 while (txq->len > 0 && limit--) {
1665 int tx;
1666 struct mwl8k_tx_desc *tx_desc;
1667 unsigned long addr;
1668 int size;
1669 struct sk_buff *skb;
1670 struct ieee80211_tx_info *info;
1671 u32 status;
1672 struct ieee80211_sta *sta;
1673 struct mwl8k_sta *sta_info = NULL;
1674 u16 rate_info;
1675 struct ieee80211_hdr *wh;
1676
1677 tx = txq->head;
1678 tx_desc = txq->txd + tx;
1679
1680 status = le32_to_cpu(tx_desc->status);
1681
1682 if (status & MWL8K_TXD_STATUS_FW_OWNED) {
1683 if (!force)
1684 break;
1685 tx_desc->status &=
1686 ~cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED);
1687 }
1688
1689 txq->head = (tx + 1) % MWL8K_TX_DESCS;
1690 BUG_ON(txq->len == 0);
1691 txq->len--;
1692 priv->pending_tx_pkts--;
1693
1694 addr = le32_to_cpu(tx_desc->pkt_phys_addr);
1695 size = le16_to_cpu(tx_desc->pkt_len);
1696 skb = txq->skb[tx];
1697 txq->skb[tx] = NULL;
1698
1699 BUG_ON(skb == NULL);
1700 pci_unmap_single(priv->pdev, addr, size, PCI_DMA_TODEVICE);
1701
1702 mwl8k_remove_dma_header(skb, tx_desc->qos_control);
1703
1704 wh = (struct ieee80211_hdr *) skb->data;
1705
1706 /* Mark descriptor as unused */
1707 tx_desc->pkt_phys_addr = 0;
1708 tx_desc->pkt_len = 0;
1709
1710 info = IEEE80211_SKB_CB(skb);
1711 if (ieee80211_is_data(wh->frame_control)) {
1712 rcu_read_lock();
1713 sta = ieee80211_find_sta_by_ifaddr(hw, wh->addr1,
1714 wh->addr2);
1715 if (sta) {
1716 sta_info = MWL8K_STA(sta);
1717 BUG_ON(sta_info == NULL);
1718 rate_info = le16_to_cpu(tx_desc->rate_info);
1719 /* If rate is < 6.5 Mpbs for an ht station
1720 * do not form an ampdu. If the station is a
1721 * legacy station (format = 0), do not form an
1722 * ampdu
1723 */
1724 if (RI_RATE_ID_MCS(rate_info) < 1 ||
1725 RI_FORMAT(rate_info) == 0) {
1726 sta_info->is_ampdu_allowed = false;
1727 } else {
1728 sta_info->is_ampdu_allowed = true;
1729 }
1730 }
1731 rcu_read_unlock();
1732 }
1733
1734 ieee80211_tx_info_clear_status(info);
1735
1736 /* Rate control is happening in the firmware.
1737 * Ensure no tx rate is being reported.
1738 */
1739 info->status.rates[0].idx = -1;
1740 info->status.rates[0].count = 1;
1741
1742 if (MWL8K_TXD_SUCCESS(status))
1743 info->flags |= IEEE80211_TX_STAT_ACK;
1744
1745 ieee80211_tx_status_irqsafe(hw, skb);
1746
1747 processed++;
1748 }
1749
1750 return processed;
1751 }
1752
1753 /* must be called only when the card's transmit is completely halted */
1754 static void mwl8k_txq_deinit(struct ieee80211_hw *hw, int index)
1755 {
1756 struct mwl8k_priv *priv = hw->priv;
1757 struct mwl8k_tx_queue *txq = priv->txq + index;
1758
1759 if (txq->txd == NULL)
1760 return;
1761
1762 mwl8k_txq_reclaim(hw, index, INT_MAX, 1);
1763
1764 kfree(txq->skb);
1765 txq->skb = NULL;
1766
1767 pci_free_consistent(priv->pdev,
1768 MWL8K_TX_DESCS * sizeof(struct mwl8k_tx_desc),
1769 txq->txd, txq->txd_dma);
1770 txq->txd = NULL;
1771 }
1772
1773 /* caller must hold priv->stream_lock when calling the stream functions */
1774 static struct mwl8k_ampdu_stream *
1775 mwl8k_add_stream(struct ieee80211_hw *hw, struct ieee80211_sta *sta, u8 tid)
1776 {
1777 struct mwl8k_ampdu_stream *stream;
1778 struct mwl8k_priv *priv = hw->priv;
1779 int i;
1780
1781 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1782 stream = &priv->ampdu[i];
1783 if (stream->state == AMPDU_NO_STREAM) {
1784 stream->sta = sta;
1785 stream->state = AMPDU_STREAM_NEW;
1786 stream->tid = tid;
1787 stream->idx = i;
1788 wiphy_debug(hw->wiphy, "Added a new stream for %pM %d",
1789 sta->addr, tid);
1790 return stream;
1791 }
1792 }
1793 return NULL;
1794 }
1795
1796 static int
1797 mwl8k_start_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1798 {
1799 int ret;
1800
1801 /* if the stream has already been started, don't start it again */
1802 if (stream->state != AMPDU_STREAM_NEW)
1803 return 0;
1804 ret = ieee80211_start_tx_ba_session(stream->sta, stream->tid, 0);
1805 if (ret)
1806 wiphy_debug(hw->wiphy, "Failed to start stream for %pM %d: "
1807 "%d\n", stream->sta->addr, stream->tid, ret);
1808 else
1809 wiphy_debug(hw->wiphy, "Started stream for %pM %d\n",
1810 stream->sta->addr, stream->tid);
1811 return ret;
1812 }
1813
1814 static void
1815 mwl8k_remove_stream(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream)
1816 {
1817 wiphy_debug(hw->wiphy, "Remove stream for %pM %d\n", stream->sta->addr,
1818 stream->tid);
1819 memset(stream, 0, sizeof(*stream));
1820 }
1821
1822 static struct mwl8k_ampdu_stream *
1823 mwl8k_lookup_stream(struct ieee80211_hw *hw, u8 *addr, u8 tid)
1824 {
1825 struct mwl8k_priv *priv = hw->priv;
1826 int i;
1827
1828 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
1829 struct mwl8k_ampdu_stream *stream;
1830 stream = &priv->ampdu[i];
1831 if (stream->state == AMPDU_NO_STREAM)
1832 continue;
1833 if (!memcmp(stream->sta->addr, addr, ETH_ALEN) &&
1834 stream->tid == tid)
1835 return stream;
1836 }
1837 return NULL;
1838 }
1839
1840 #define MWL8K_AMPDU_PACKET_THRESHOLD 64
1841 static inline bool mwl8k_ampdu_allowed(struct ieee80211_sta *sta, u8 tid)
1842 {
1843 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1844 struct tx_traffic_info *tx_stats;
1845
1846 BUG_ON(tid >= MWL8K_MAX_TID);
1847 tx_stats = &sta_info->tx_stats[tid];
1848
1849 return sta_info->is_ampdu_allowed &&
1850 tx_stats->pkts > MWL8K_AMPDU_PACKET_THRESHOLD;
1851 }
1852
1853 static inline void mwl8k_tx_count_packet(struct ieee80211_sta *sta, u8 tid)
1854 {
1855 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
1856 struct tx_traffic_info *tx_stats;
1857
1858 BUG_ON(tid >= MWL8K_MAX_TID);
1859 tx_stats = &sta_info->tx_stats[tid];
1860
1861 if (tx_stats->start_time == 0)
1862 tx_stats->start_time = jiffies;
1863
1864 /* reset the packet count after each second elapses. If the number of
1865 * packets ever exceeds the ampdu_min_traffic threshold, we will allow
1866 * an ampdu stream to be started.
1867 */
1868 if (jiffies - tx_stats->start_time > HZ) {
1869 tx_stats->pkts = 0;
1870 tx_stats->start_time = 0;
1871 } else
1872 tx_stats->pkts++;
1873 }
1874
1875 /* The hardware ampdu queues start from 5.
1876 * txpriorities for ampdu queues are
1877 * 5 6 7 0 1 2 3 4 ie., queue 5 is highest
1878 * and queue 3 is lowest (queue 4 is reserved)
1879 */
1880 #define BA_QUEUE 5
1881
1882 static void
1883 mwl8k_txq_xmit(struct ieee80211_hw *hw,
1884 int index,
1885 struct ieee80211_sta *sta,
1886 struct sk_buff *skb)
1887 {
1888 struct mwl8k_priv *priv = hw->priv;
1889 struct ieee80211_tx_info *tx_info;
1890 struct mwl8k_vif *mwl8k_vif;
1891 struct ieee80211_hdr *wh;
1892 struct mwl8k_tx_queue *txq;
1893 struct mwl8k_tx_desc *tx;
1894 dma_addr_t dma;
1895 u32 txstatus;
1896 u8 txdatarate;
1897 u16 qos;
1898 int txpriority;
1899 u8 tid = 0;
1900 struct mwl8k_ampdu_stream *stream = NULL;
1901 bool start_ba_session = false;
1902 bool mgmtframe = false;
1903 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
1904 bool eapol_frame = false;
1905
1906 wh = (struct ieee80211_hdr *)skb->data;
1907 if (ieee80211_is_data_qos(wh->frame_control))
1908 qos = le16_to_cpu(*((__le16 *)ieee80211_get_qos_ctl(wh)));
1909 else
1910 qos = 0;
1911
1912 if (skb->protocol == cpu_to_be16(ETH_P_PAE))
1913 eapol_frame = true;
1914
1915 if (ieee80211_is_mgmt(wh->frame_control))
1916 mgmtframe = true;
1917
1918 if (priv->ap_fw)
1919 mwl8k_encapsulate_tx_frame(priv, skb);
1920 else
1921 mwl8k_add_dma_header(priv, skb, 0, 0);
1922
1923 wh = &((struct mwl8k_dma_data *)skb->data)->wh;
1924
1925 tx_info = IEEE80211_SKB_CB(skb);
1926 mwl8k_vif = MWL8K_VIF(tx_info->control.vif);
1927
1928 if (tx_info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
1929 wh->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
1930 wh->seq_ctrl |= cpu_to_le16(mwl8k_vif->seqno);
1931 mwl8k_vif->seqno += 0x10;
1932 }
1933
1934 /* Setup firmware control bit fields for each frame type. */
1935 txstatus = 0;
1936 txdatarate = 0;
1937 if (ieee80211_is_mgmt(wh->frame_control) ||
1938 ieee80211_is_ctl(wh->frame_control)) {
1939 txdatarate = 0;
1940 qos |= MWL8K_QOS_QLEN_UNSPEC | MWL8K_QOS_EOSP;
1941 } else if (ieee80211_is_data(wh->frame_control)) {
1942 txdatarate = 1;
1943 if (is_multicast_ether_addr(wh->addr1))
1944 txstatus |= MWL8K_TXD_STATUS_MULTICAST_TX;
1945
1946 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
1947 if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
1948 qos |= MWL8K_QOS_ACK_POLICY_BLOCKACK;
1949 else
1950 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
1951 }
1952
1953 /* Queue ADDBA request in the respective data queue. While setting up
1954 * the ampdu stream, mac80211 queues further packets for that
1955 * particular ra/tid pair. However, packets piled up in the hardware
1956 * for that ra/tid pair will still go out. ADDBA request and the
1957 * related data packets going out from different queues asynchronously
1958 * will cause a shift in the receiver window which might result in
1959 * ampdu packets getting dropped at the receiver after the stream has
1960 * been setup.
1961 */
1962 if (unlikely(ieee80211_is_action(wh->frame_control) &&
1963 mgmt->u.action.category == WLAN_CATEGORY_BACK &&
1964 mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ &&
1965 priv->ap_fw)) {
1966 u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
1967 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
1968 index = mwl8k_tid_queue_mapping(tid);
1969 }
1970
1971 txpriority = index;
1972
1973 if (priv->ap_fw && sta && sta->ht_cap.ht_supported && !eapol_frame &&
1974 ieee80211_is_data_qos(wh->frame_control)) {
1975 tid = qos & 0xf;
1976 mwl8k_tx_count_packet(sta, tid);
1977 spin_lock(&priv->stream_lock);
1978 stream = mwl8k_lookup_stream(hw, sta->addr, tid);
1979 if (stream != NULL) {
1980 if (stream->state == AMPDU_STREAM_ACTIVE) {
1981 WARN_ON(!(qos & MWL8K_QOS_ACK_POLICY_BLOCKACK));
1982 txpriority = (BA_QUEUE + stream->idx) %
1983 TOTAL_HW_TX_QUEUES;
1984 if (stream->idx <= 1)
1985 index = stream->idx +
1986 MWL8K_TX_WMM_QUEUES;
1987
1988 } else if (stream->state == AMPDU_STREAM_NEW) {
1989 /* We get here if the driver sends us packets
1990 * after we've initiated a stream, but before
1991 * our ampdu_action routine has been called
1992 * with IEEE80211_AMPDU_TX_START to get the SSN
1993 * for the ADDBA request. So this packet can
1994 * go out with no risk of sequence number
1995 * mismatch. No special handling is required.
1996 */
1997 } else {
1998 /* Drop packets that would go out after the
1999 * ADDBA request was sent but before the ADDBA
2000 * response is received. If we don't do this,
2001 * the recipient would probably receive it
2002 * after the ADDBA request with SSN 0. This
2003 * will cause the recipient's BA receive window
2004 * to shift, which would cause the subsequent
2005 * packets in the BA stream to be discarded.
2006 * mac80211 queues our packets for us in this
2007 * case, so this is really just a safety check.
2008 */
2009 wiphy_warn(hw->wiphy,
2010 "Cannot send packet while ADDBA "
2011 "dialog is underway.\n");
2012 spin_unlock(&priv->stream_lock);
2013 dev_kfree_skb(skb);
2014 return;
2015 }
2016 } else {
2017 /* Defer calling mwl8k_start_stream so that the current
2018 * skb can go out before the ADDBA request. This
2019 * prevents sequence number mismatch at the recepient
2020 * as described above.
2021 */
2022 if (mwl8k_ampdu_allowed(sta, tid)) {
2023 stream = mwl8k_add_stream(hw, sta, tid);
2024 if (stream != NULL)
2025 start_ba_session = true;
2026 }
2027 }
2028 spin_unlock(&priv->stream_lock);
2029 } else {
2030 qos &= ~MWL8K_QOS_ACK_POLICY_MASK;
2031 qos |= MWL8K_QOS_ACK_POLICY_NORMAL;
2032 }
2033
2034 dma = pci_map_single(priv->pdev, skb->data,
2035 skb->len, PCI_DMA_TODEVICE);
2036
2037 if (pci_dma_mapping_error(priv->pdev, dma)) {
2038 wiphy_debug(hw->wiphy,
2039 "failed to dma map skb, dropping TX frame.\n");
2040 if (start_ba_session) {
2041 spin_lock(&priv->stream_lock);
2042 mwl8k_remove_stream(hw, stream);
2043 spin_unlock(&priv->stream_lock);
2044 }
2045 dev_kfree_skb(skb);
2046 return;
2047 }
2048
2049 spin_lock_bh(&priv->tx_lock);
2050
2051 txq = priv->txq + index;
2052
2053 /* Mgmt frames that go out frequently are probe
2054 * responses. Other mgmt frames got out relatively
2055 * infrequently. Hence reserve 2 buffers so that
2056 * other mgmt frames do not get dropped due to an
2057 * already queued probe response in one of the
2058 * reserved buffers.
2059 */
2060
2061 if (txq->len >= MWL8K_TX_DESCS - 2) {
2062 if (!mgmtframe || txq->len == MWL8K_TX_DESCS) {
2063 if (start_ba_session) {
2064 spin_lock(&priv->stream_lock);
2065 mwl8k_remove_stream(hw, stream);
2066 spin_unlock(&priv->stream_lock);
2067 }
2068 mwl8k_tx_start(priv);
2069 spin_unlock_bh(&priv->tx_lock);
2070 pci_unmap_single(priv->pdev, dma, skb->len,
2071 PCI_DMA_TODEVICE);
2072 dev_kfree_skb(skb);
2073 return;
2074 }
2075 }
2076
2077 BUG_ON(txq->skb[txq->tail] != NULL);
2078 txq->skb[txq->tail] = skb;
2079
2080 tx = txq->txd + txq->tail;
2081 tx->data_rate = txdatarate;
2082 tx->tx_priority = txpriority;
2083 tx->qos_control = cpu_to_le16(qos);
2084 tx->pkt_phys_addr = cpu_to_le32(dma);
2085 tx->pkt_len = cpu_to_le16(skb->len);
2086 tx->rate_info = 0;
2087 if (!priv->ap_fw && sta != NULL)
2088 tx->peer_id = MWL8K_STA(sta)->peer_id;
2089 else
2090 tx->peer_id = 0;
2091
2092 if (priv->ap_fw && ieee80211_is_data(wh->frame_control) && !eapol_frame)
2093 tx->timestamp = cpu_to_le32(ioread32(priv->regs +
2094 MWL8K_HW_TIMER_REGISTER));
2095 else
2096 tx->timestamp = 0;
2097
2098 wmb();
2099 tx->status = cpu_to_le32(MWL8K_TXD_STATUS_FW_OWNED | txstatus);
2100
2101 txq->len++;
2102 priv->pending_tx_pkts++;
2103
2104 txq->tail++;
2105 if (txq->tail == MWL8K_TX_DESCS)
2106 txq->tail = 0;
2107
2108 mwl8k_tx_start(priv);
2109
2110 spin_unlock_bh(&priv->tx_lock);
2111
2112 /* Initiate the ampdu session here */
2113 if (start_ba_session) {
2114 spin_lock(&priv->stream_lock);
2115 if (mwl8k_start_stream(hw, stream))
2116 mwl8k_remove_stream(hw, stream);
2117 spin_unlock(&priv->stream_lock);
2118 }
2119 }
2120
2121
2122 /*
2123 * Firmware access.
2124 *
2125 * We have the following requirements for issuing firmware commands:
2126 * - Some commands require that the packet transmit path is idle when
2127 * the command is issued. (For simplicity, we'll just quiesce the
2128 * transmit path for every command.)
2129 * - There are certain sequences of commands that need to be issued to
2130 * the hardware sequentially, with no other intervening commands.
2131 *
2132 * This leads to an implementation of a "firmware lock" as a mutex that
2133 * can be taken recursively, and which is taken by both the low-level
2134 * command submission function (mwl8k_post_cmd) as well as any users of
2135 * that function that require issuing of an atomic sequence of commands,
2136 * and quiesces the transmit path whenever it's taken.
2137 */
2138 static int mwl8k_fw_lock(struct ieee80211_hw *hw)
2139 {
2140 struct mwl8k_priv *priv = hw->priv;
2141
2142 if (priv->fw_mutex_owner != current) {
2143 int rc;
2144
2145 mutex_lock(&priv->fw_mutex);
2146 ieee80211_stop_queues(hw);
2147
2148 rc = mwl8k_tx_wait_empty(hw);
2149 if (rc) {
2150 if (!priv->hw_restart_in_progress)
2151 ieee80211_wake_queues(hw);
2152
2153 mutex_unlock(&priv->fw_mutex);
2154
2155 return rc;
2156 }
2157
2158 priv->fw_mutex_owner = current;
2159 }
2160
2161 priv->fw_mutex_depth++;
2162
2163 return 0;
2164 }
2165
2166 static void mwl8k_fw_unlock(struct ieee80211_hw *hw)
2167 {
2168 struct mwl8k_priv *priv = hw->priv;
2169
2170 if (!--priv->fw_mutex_depth) {
2171 if (!priv->hw_restart_in_progress)
2172 ieee80211_wake_queues(hw);
2173
2174 priv->fw_mutex_owner = NULL;
2175 mutex_unlock(&priv->fw_mutex);
2176 }
2177 }
2178
2179 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable,
2180 u32 bitmap);
2181
2182 /*
2183 * Command processing.
2184 */
2185
2186 /* Timeout firmware commands after 10s */
2187 #define MWL8K_CMD_TIMEOUT_MS 10000
2188
2189 static int mwl8k_post_cmd(struct ieee80211_hw *hw, struct mwl8k_cmd_pkt *cmd)
2190 {
2191 DECLARE_COMPLETION_ONSTACK(cmd_wait);
2192 struct mwl8k_priv *priv = hw->priv;
2193 void __iomem *regs = priv->regs;
2194 dma_addr_t dma_addr;
2195 unsigned int dma_size;
2196 int rc;
2197 unsigned long timeout = 0;
2198 u8 buf[32];
2199 u32 bitmap = 0;
2200
2201 wiphy_dbg(hw->wiphy, "Posting %s [%d]\n",
2202 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)), cmd->macid);
2203
2204 /* Before posting firmware commands that could change the hardware
2205 * characteristics, make sure that all BSSes are stopped temporary.
2206 * Enable these stopped BSSes after completion of the commands
2207 */
2208
2209 rc = mwl8k_fw_lock(hw);
2210 if (rc)
2211 return rc;
2212
2213 if (priv->ap_fw && priv->running_bsses) {
2214 switch (le16_to_cpu(cmd->code)) {
2215 case MWL8K_CMD_SET_RF_CHANNEL:
2216 case MWL8K_CMD_RADIO_CONTROL:
2217 case MWL8K_CMD_RF_TX_POWER:
2218 case MWL8K_CMD_TX_POWER:
2219 case MWL8K_CMD_RF_ANTENNA:
2220 case MWL8K_CMD_RTS_THRESHOLD:
2221 case MWL8K_CMD_MIMO_CONFIG:
2222 bitmap = priv->running_bsses;
2223 mwl8k_enable_bsses(hw, false, bitmap);
2224 break;
2225 }
2226 }
2227
2228 cmd->result = (__force __le16) 0xffff;
2229 dma_size = le16_to_cpu(cmd->length);
2230 dma_addr = pci_map_single(priv->pdev, cmd, dma_size,
2231 PCI_DMA_BIDIRECTIONAL);
2232 if (pci_dma_mapping_error(priv->pdev, dma_addr))
2233 return -ENOMEM;
2234
2235 priv->hostcmd_wait = &cmd_wait;
2236 iowrite32(dma_addr, regs + MWL8K_HIU_GEN_PTR);
2237 iowrite32(MWL8K_H2A_INT_DOORBELL,
2238 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2239 iowrite32(MWL8K_H2A_INT_DUMMY,
2240 regs + MWL8K_HIU_H2A_INTERRUPT_EVENTS);
2241
2242 timeout = wait_for_completion_timeout(&cmd_wait,
2243 msecs_to_jiffies(MWL8K_CMD_TIMEOUT_MS));
2244
2245 priv->hostcmd_wait = NULL;
2246
2247
2248 pci_unmap_single(priv->pdev, dma_addr, dma_size,
2249 PCI_DMA_BIDIRECTIONAL);
2250
2251 if (!timeout) {
2252 wiphy_err(hw->wiphy, "Command %s timeout after %u ms\n",
2253 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2254 MWL8K_CMD_TIMEOUT_MS);
2255 rc = -ETIMEDOUT;
2256 } else {
2257 int ms;
2258
2259 ms = MWL8K_CMD_TIMEOUT_MS - jiffies_to_msecs(timeout);
2260
2261 rc = cmd->result ? -EINVAL : 0;
2262 if (rc)
2263 wiphy_err(hw->wiphy, "Command %s error 0x%x\n",
2264 mwl8k_cmd_name(cmd->code, buf, sizeof(buf)),
2265 le16_to_cpu(cmd->result));
2266 else if (ms > 2000)
2267 wiphy_notice(hw->wiphy, "Command %s took %d ms\n",
2268 mwl8k_cmd_name(cmd->code,
2269 buf, sizeof(buf)),
2270 ms);
2271 }
2272
2273 if (bitmap)
2274 mwl8k_enable_bsses(hw, true, bitmap);
2275
2276 mwl8k_fw_unlock(hw);
2277
2278 return rc;
2279 }
2280
2281 static int mwl8k_post_pervif_cmd(struct ieee80211_hw *hw,
2282 struct ieee80211_vif *vif,
2283 struct mwl8k_cmd_pkt *cmd)
2284 {
2285 if (vif != NULL)
2286 cmd->macid = MWL8K_VIF(vif)->macid;
2287 return mwl8k_post_cmd(hw, cmd);
2288 }
2289
2290 /*
2291 * Setup code shared between STA and AP firmware images.
2292 */
2293 static void mwl8k_setup_2ghz_band(struct ieee80211_hw *hw)
2294 {
2295 struct mwl8k_priv *priv = hw->priv;
2296
2297 BUILD_BUG_ON(sizeof(priv->channels_24) != sizeof(mwl8k_channels_24));
2298 memcpy(priv->channels_24, mwl8k_channels_24, sizeof(mwl8k_channels_24));
2299
2300 BUILD_BUG_ON(sizeof(priv->rates_24) != sizeof(mwl8k_rates_24));
2301 memcpy(priv->rates_24, mwl8k_rates_24, sizeof(mwl8k_rates_24));
2302
2303 priv->band_24.band = IEEE80211_BAND_2GHZ;
2304 priv->band_24.channels = priv->channels_24;
2305 priv->band_24.n_channels = ARRAY_SIZE(mwl8k_channels_24);
2306 priv->band_24.bitrates = priv->rates_24;
2307 priv->band_24.n_bitrates = ARRAY_SIZE(mwl8k_rates_24);
2308
2309 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band_24;
2310 }
2311
2312 static void mwl8k_setup_5ghz_band(struct ieee80211_hw *hw)
2313 {
2314 struct mwl8k_priv *priv = hw->priv;
2315
2316 BUILD_BUG_ON(sizeof(priv->channels_50) != sizeof(mwl8k_channels_50));
2317 memcpy(priv->channels_50, mwl8k_channels_50, sizeof(mwl8k_channels_50));
2318
2319 BUILD_BUG_ON(sizeof(priv->rates_50) != sizeof(mwl8k_rates_50));
2320 memcpy(priv->rates_50, mwl8k_rates_50, sizeof(mwl8k_rates_50));
2321
2322 priv->band_50.band = IEEE80211_BAND_5GHZ;
2323 priv->band_50.channels = priv->channels_50;
2324 priv->band_50.n_channels = ARRAY_SIZE(mwl8k_channels_50);
2325 priv->band_50.bitrates = priv->rates_50;
2326 priv->band_50.n_bitrates = ARRAY_SIZE(mwl8k_rates_50);
2327
2328 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &priv->band_50;
2329 }
2330
2331 /*
2332 * CMD_GET_HW_SPEC (STA version).
2333 */
2334 struct mwl8k_cmd_get_hw_spec_sta {
2335 struct mwl8k_cmd_pkt header;
2336 __u8 hw_rev;
2337 __u8 host_interface;
2338 __le16 num_mcaddrs;
2339 __u8 perm_addr[ETH_ALEN];
2340 __le16 region_code;
2341 __le32 fw_rev;
2342 __le32 ps_cookie;
2343 __le32 caps;
2344 __u8 mcs_bitmap[16];
2345 __le32 rx_queue_ptr;
2346 __le32 num_tx_queues;
2347 __le32 tx_queue_ptrs[MWL8K_TX_WMM_QUEUES];
2348 __le32 caps2;
2349 __le32 num_tx_desc_per_queue;
2350 __le32 total_rxd;
2351 } __packed;
2352
2353 #define MWL8K_CAP_MAX_AMSDU 0x20000000
2354 #define MWL8K_CAP_GREENFIELD 0x08000000
2355 #define MWL8K_CAP_AMPDU 0x04000000
2356 #define MWL8K_CAP_RX_STBC 0x01000000
2357 #define MWL8K_CAP_TX_STBC 0x00800000
2358 #define MWL8K_CAP_SHORTGI_40MHZ 0x00400000
2359 #define MWL8K_CAP_SHORTGI_20MHZ 0x00200000
2360 #define MWL8K_CAP_RX_ANTENNA_MASK 0x000e0000
2361 #define MWL8K_CAP_TX_ANTENNA_MASK 0x0001c000
2362 #define MWL8K_CAP_DELAY_BA 0x00003000
2363 #define MWL8K_CAP_MIMO 0x00000200
2364 #define MWL8K_CAP_40MHZ 0x00000100
2365 #define MWL8K_CAP_BAND_MASK 0x00000007
2366 #define MWL8K_CAP_5GHZ 0x00000004
2367 #define MWL8K_CAP_2GHZ4 0x00000001
2368
2369 static void
2370 mwl8k_set_ht_caps(struct ieee80211_hw *hw,
2371 struct ieee80211_supported_band *band, u32 cap)
2372 {
2373 int rx_streams;
2374 int tx_streams;
2375
2376 band->ht_cap.ht_supported = 1;
2377
2378 if (cap & MWL8K_CAP_MAX_AMSDU)
2379 band->ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
2380 if (cap & MWL8K_CAP_GREENFIELD)
2381 band->ht_cap.cap |= IEEE80211_HT_CAP_GRN_FLD;
2382 if (cap & MWL8K_CAP_AMPDU) {
2383 hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
2384 band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
2385 band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
2386 }
2387 if (cap & MWL8K_CAP_RX_STBC)
2388 band->ht_cap.cap |= IEEE80211_HT_CAP_RX_STBC;
2389 if (cap & MWL8K_CAP_TX_STBC)
2390 band->ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
2391 if (cap & MWL8K_CAP_SHORTGI_40MHZ)
2392 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
2393 if (cap & MWL8K_CAP_SHORTGI_20MHZ)
2394 band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
2395 if (cap & MWL8K_CAP_DELAY_BA)
2396 band->ht_cap.cap |= IEEE80211_HT_CAP_DELAY_BA;
2397 if (cap & MWL8K_CAP_40MHZ)
2398 band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
2399
2400 rx_streams = hweight32(cap & MWL8K_CAP_RX_ANTENNA_MASK);
2401 tx_streams = hweight32(cap & MWL8K_CAP_TX_ANTENNA_MASK);
2402
2403 band->ht_cap.mcs.rx_mask[0] = 0xff;
2404 if (rx_streams >= 2)
2405 band->ht_cap.mcs.rx_mask[1] = 0xff;
2406 if (rx_streams >= 3)
2407 band->ht_cap.mcs.rx_mask[2] = 0xff;
2408 band->ht_cap.mcs.rx_mask[4] = 0x01;
2409 band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
2410
2411 if (rx_streams != tx_streams) {
2412 band->ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
2413 band->ht_cap.mcs.tx_params |= (tx_streams - 1) <<
2414 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT;
2415 }
2416 }
2417
2418 static void
2419 mwl8k_set_caps(struct ieee80211_hw *hw, u32 caps)
2420 {
2421 struct mwl8k_priv *priv = hw->priv;
2422
2423 if (priv->caps)
2424 return;
2425
2426 if ((caps & MWL8K_CAP_2GHZ4) || !(caps & MWL8K_CAP_BAND_MASK)) {
2427 mwl8k_setup_2ghz_band(hw);
2428 if (caps & MWL8K_CAP_MIMO)
2429 mwl8k_set_ht_caps(hw, &priv->band_24, caps);
2430 }
2431
2432 if (caps & MWL8K_CAP_5GHZ) {
2433 mwl8k_setup_5ghz_band(hw);
2434 if (caps & MWL8K_CAP_MIMO)
2435 mwl8k_set_ht_caps(hw, &priv->band_50, caps);
2436 }
2437
2438 priv->caps = caps;
2439 }
2440
2441 static int mwl8k_cmd_get_hw_spec_sta(struct ieee80211_hw *hw)
2442 {
2443 struct mwl8k_priv *priv = hw->priv;
2444 struct mwl8k_cmd_get_hw_spec_sta *cmd;
2445 int rc;
2446 int i;
2447
2448 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2449 if (cmd == NULL)
2450 return -ENOMEM;
2451
2452 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2453 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2454
2455 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2456 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2457 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2458 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2459 for (i = 0; i < mwl8k_tx_queues(priv); i++)
2460 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[i].txd_dma);
2461 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2462 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2463
2464 rc = mwl8k_post_cmd(hw, &cmd->header);
2465
2466 if (!rc) {
2467 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2468 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2469 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2470 priv->hw_rev = cmd->hw_rev;
2471 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2472 priv->ap_macids_supported = 0x00000000;
2473 priv->sta_macids_supported = 0x00000001;
2474 }
2475
2476 kfree(cmd);
2477 return rc;
2478 }
2479
2480 /*
2481 * CMD_GET_HW_SPEC (AP version).
2482 */
2483 struct mwl8k_cmd_get_hw_spec_ap {
2484 struct mwl8k_cmd_pkt header;
2485 __u8 hw_rev;
2486 __u8 host_interface;
2487 __le16 num_wcb;
2488 __le16 num_mcaddrs;
2489 __u8 perm_addr[ETH_ALEN];
2490 __le16 region_code;
2491 __le16 num_antenna;
2492 __le32 fw_rev;
2493 __le32 wcbbase0;
2494 __le32 rxwrptr;
2495 __le32 rxrdptr;
2496 __le32 ps_cookie;
2497 __le32 wcbbase1;
2498 __le32 wcbbase2;
2499 __le32 wcbbase3;
2500 __le32 fw_api_version;
2501 __le32 caps;
2502 __le32 num_of_ampdu_queues;
2503 __le32 wcbbase_ampdu[MWL8K_MAX_AMPDU_QUEUES];
2504 } __packed;
2505
2506 static int mwl8k_cmd_get_hw_spec_ap(struct ieee80211_hw *hw)
2507 {
2508 struct mwl8k_priv *priv = hw->priv;
2509 struct mwl8k_cmd_get_hw_spec_ap *cmd;
2510 int rc, i;
2511 u32 api_version;
2512
2513 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2514 if (cmd == NULL)
2515 return -ENOMEM;
2516
2517 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_HW_SPEC);
2518 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2519
2520 memset(cmd->perm_addr, 0xff, sizeof(cmd->perm_addr));
2521 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2522
2523 rc = mwl8k_post_cmd(hw, &cmd->header);
2524
2525 if (!rc) {
2526 int off;
2527
2528 api_version = le32_to_cpu(cmd->fw_api_version);
2529 if (priv->device_info->fw_api_ap != api_version) {
2530 printk(KERN_ERR "%s: Unsupported fw API version for %s."
2531 " Expected %d got %d.\n", MWL8K_NAME,
2532 priv->device_info->part_name,
2533 priv->device_info->fw_api_ap,
2534 api_version);
2535 rc = -EINVAL;
2536 goto done;
2537 }
2538 SET_IEEE80211_PERM_ADDR(hw, cmd->perm_addr);
2539 priv->num_mcaddrs = le16_to_cpu(cmd->num_mcaddrs);
2540 priv->fw_rev = le32_to_cpu(cmd->fw_rev);
2541 priv->hw_rev = cmd->hw_rev;
2542 mwl8k_set_caps(hw, le32_to_cpu(cmd->caps));
2543 priv->ap_macids_supported = 0x000000ff;
2544 priv->sta_macids_supported = 0x00000100;
2545 priv->num_ampdu_queues = le32_to_cpu(cmd->num_of_ampdu_queues);
2546 if (priv->num_ampdu_queues > MWL8K_MAX_AMPDU_QUEUES) {
2547 wiphy_warn(hw->wiphy, "fw reported %d ampdu queues"
2548 " but we only support %d.\n",
2549 priv->num_ampdu_queues,
2550 MWL8K_MAX_AMPDU_QUEUES);
2551 priv->num_ampdu_queues = MWL8K_MAX_AMPDU_QUEUES;
2552 }
2553 off = le32_to_cpu(cmd->rxwrptr) & 0xffff;
2554 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2555
2556 off = le32_to_cpu(cmd->rxrdptr) & 0xffff;
2557 iowrite32(priv->rxq[0].rxd_dma, priv->sram + off);
2558
2559 priv->txq_offset[0] = le32_to_cpu(cmd->wcbbase0) & 0xffff;
2560 priv->txq_offset[1] = le32_to_cpu(cmd->wcbbase1) & 0xffff;
2561 priv->txq_offset[2] = le32_to_cpu(cmd->wcbbase2) & 0xffff;
2562 priv->txq_offset[3] = le32_to_cpu(cmd->wcbbase3) & 0xffff;
2563
2564 for (i = 0; i < priv->num_ampdu_queues; i++)
2565 priv->txq_offset[i + MWL8K_TX_WMM_QUEUES] =
2566 le32_to_cpu(cmd->wcbbase_ampdu[i]) & 0xffff;
2567 }
2568
2569 done:
2570 kfree(cmd);
2571 return rc;
2572 }
2573
2574 /*
2575 * CMD_SET_HW_SPEC.
2576 */
2577 struct mwl8k_cmd_set_hw_spec {
2578 struct mwl8k_cmd_pkt header;
2579 __u8 hw_rev;
2580 __u8 host_interface;
2581 __le16 num_mcaddrs;
2582 __u8 perm_addr[ETH_ALEN];
2583 __le16 region_code;
2584 __le32 fw_rev;
2585 __le32 ps_cookie;
2586 __le32 caps;
2587 __le32 rx_queue_ptr;
2588 __le32 num_tx_queues;
2589 __le32 tx_queue_ptrs[MWL8K_MAX_TX_QUEUES];
2590 __le32 flags;
2591 __le32 num_tx_desc_per_queue;
2592 __le32 total_rxd;
2593 } __packed;
2594
2595 /* If enabled, MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY will cause
2596 * packets to expire 500 ms after the timestamp in the tx descriptor. That is,
2597 * the packets that are queued for more than 500ms, will be dropped in the
2598 * hardware. This helps minimizing the issues caused due to head-of-line
2599 * blocking where a slow client can hog the bandwidth and affect traffic to a
2600 * faster client.
2601 */
2602 #define MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY 0x00000400
2603 #define MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR 0x00000200
2604 #define MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT 0x00000080
2605 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP 0x00000020
2606 #define MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON 0x00000010
2607
2608 static int mwl8k_cmd_set_hw_spec(struct ieee80211_hw *hw)
2609 {
2610 struct mwl8k_priv *priv = hw->priv;
2611 struct mwl8k_cmd_set_hw_spec *cmd;
2612 int rc;
2613 int i;
2614
2615 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2616 if (cmd == NULL)
2617 return -ENOMEM;
2618
2619 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_HW_SPEC);
2620 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2621
2622 cmd->ps_cookie = cpu_to_le32(priv->cookie_dma);
2623 cmd->rx_queue_ptr = cpu_to_le32(priv->rxq[0].rxd_dma);
2624 cmd->num_tx_queues = cpu_to_le32(mwl8k_tx_queues(priv));
2625
2626 /*
2627 * Mac80211 stack has Q0 as highest priority and Q3 as lowest in
2628 * that order. Firmware has Q3 as highest priority and Q0 as lowest
2629 * in that order. Map Q3 of mac80211 to Q0 of firmware so that the
2630 * priority is interpreted the right way in firmware.
2631 */
2632 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
2633 int j = mwl8k_tx_queues(priv) - 1 - i;
2634 cmd->tx_queue_ptrs[i] = cpu_to_le32(priv->txq[j].txd_dma);
2635 }
2636
2637 cmd->flags = cpu_to_le32(MWL8K_SET_HW_SPEC_FLAG_HOST_DECR_MGMT |
2638 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_PROBERESP |
2639 MWL8K_SET_HW_SPEC_FLAG_HOSTFORM_BEACON |
2640 MWL8K_SET_HW_SPEC_FLAG_ENABLE_LIFE_TIME_EXPIRY |
2641 MWL8K_SET_HW_SPEC_FLAG_GENERATE_CCMP_HDR);
2642 cmd->num_tx_desc_per_queue = cpu_to_le32(MWL8K_TX_DESCS);
2643 cmd->total_rxd = cpu_to_le32(MWL8K_RX_DESCS);
2644
2645 rc = mwl8k_post_cmd(hw, &cmd->header);
2646 kfree(cmd);
2647
2648 return rc;
2649 }
2650
2651 /*
2652 * CMD_MAC_MULTICAST_ADR.
2653 */
2654 struct mwl8k_cmd_mac_multicast_adr {
2655 struct mwl8k_cmd_pkt header;
2656 __le16 action;
2657 __le16 numaddr;
2658 __u8 addr[0][ETH_ALEN];
2659 };
2660
2661 #define MWL8K_ENABLE_RX_DIRECTED 0x0001
2662 #define MWL8K_ENABLE_RX_MULTICAST 0x0002
2663 #define MWL8K_ENABLE_RX_ALL_MULTICAST 0x0004
2664 #define MWL8K_ENABLE_RX_BROADCAST 0x0008
2665
2666 static struct mwl8k_cmd_pkt *
2667 __mwl8k_cmd_mac_multicast_adr(struct ieee80211_hw *hw, int allmulti,
2668 struct netdev_hw_addr_list *mc_list)
2669 {
2670 struct mwl8k_priv *priv = hw->priv;
2671 struct mwl8k_cmd_mac_multicast_adr *cmd;
2672 int size;
2673 int mc_count = 0;
2674
2675 if (mc_list)
2676 mc_count = netdev_hw_addr_list_count(mc_list);
2677
2678 if (allmulti || mc_count > priv->num_mcaddrs) {
2679 allmulti = 1;
2680 mc_count = 0;
2681 }
2682
2683 size = sizeof(*cmd) + mc_count * ETH_ALEN;
2684
2685 cmd = kzalloc(size, GFP_ATOMIC);
2686 if (cmd == NULL)
2687 return NULL;
2688
2689 cmd->header.code = cpu_to_le16(MWL8K_CMD_MAC_MULTICAST_ADR);
2690 cmd->header.length = cpu_to_le16(size);
2691 cmd->action = cpu_to_le16(MWL8K_ENABLE_RX_DIRECTED |
2692 MWL8K_ENABLE_RX_BROADCAST);
2693
2694 if (allmulti) {
2695 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_ALL_MULTICAST);
2696 } else if (mc_count) {
2697 struct netdev_hw_addr *ha;
2698 int i = 0;
2699
2700 cmd->action |= cpu_to_le16(MWL8K_ENABLE_RX_MULTICAST);
2701 cmd->numaddr = cpu_to_le16(mc_count);
2702 netdev_hw_addr_list_for_each(ha, mc_list) {
2703 memcpy(cmd->addr[i], ha->addr, ETH_ALEN);
2704 }
2705 }
2706
2707 return &cmd->header;
2708 }
2709
2710 /*
2711 * CMD_GET_STAT.
2712 */
2713 struct mwl8k_cmd_get_stat {
2714 struct mwl8k_cmd_pkt header;
2715 __le32 stats[64];
2716 } __packed;
2717
2718 #define MWL8K_STAT_ACK_FAILURE 9
2719 #define MWL8K_STAT_RTS_FAILURE 12
2720 #define MWL8K_STAT_FCS_ERROR 24
2721 #define MWL8K_STAT_RTS_SUCCESS 11
2722
2723 static int mwl8k_cmd_get_stat(struct ieee80211_hw *hw,
2724 struct ieee80211_low_level_stats *stats)
2725 {
2726 struct mwl8k_cmd_get_stat *cmd;
2727 int rc;
2728
2729 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2730 if (cmd == NULL)
2731 return -ENOMEM;
2732
2733 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_STAT);
2734 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2735
2736 rc = mwl8k_post_cmd(hw, &cmd->header);
2737 if (!rc) {
2738 stats->dot11ACKFailureCount =
2739 le32_to_cpu(cmd->stats[MWL8K_STAT_ACK_FAILURE]);
2740 stats->dot11RTSFailureCount =
2741 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_FAILURE]);
2742 stats->dot11FCSErrorCount =
2743 le32_to_cpu(cmd->stats[MWL8K_STAT_FCS_ERROR]);
2744 stats->dot11RTSSuccessCount =
2745 le32_to_cpu(cmd->stats[MWL8K_STAT_RTS_SUCCESS]);
2746 }
2747 kfree(cmd);
2748
2749 return rc;
2750 }
2751
2752 /*
2753 * CMD_RADIO_CONTROL.
2754 */
2755 struct mwl8k_cmd_radio_control {
2756 struct mwl8k_cmd_pkt header;
2757 __le16 action;
2758 __le16 control;
2759 __le16 radio_on;
2760 } __packed;
2761
2762 static int
2763 mwl8k_cmd_radio_control(struct ieee80211_hw *hw, bool enable, bool force)
2764 {
2765 struct mwl8k_priv *priv = hw->priv;
2766 struct mwl8k_cmd_radio_control *cmd;
2767 int rc;
2768
2769 if (enable == priv->radio_on && !force)
2770 return 0;
2771
2772 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2773 if (cmd == NULL)
2774 return -ENOMEM;
2775
2776 cmd->header.code = cpu_to_le16(MWL8K_CMD_RADIO_CONTROL);
2777 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2778 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2779 cmd->control = cpu_to_le16(priv->radio_short_preamble ? 3 : 1);
2780 cmd->radio_on = cpu_to_le16(enable ? 0x0001 : 0x0000);
2781
2782 rc = mwl8k_post_cmd(hw, &cmd->header);
2783 kfree(cmd);
2784
2785 if (!rc)
2786 priv->radio_on = enable;
2787
2788 return rc;
2789 }
2790
2791 static int mwl8k_cmd_radio_disable(struct ieee80211_hw *hw)
2792 {
2793 return mwl8k_cmd_radio_control(hw, 0, 0);
2794 }
2795
2796 static int mwl8k_cmd_radio_enable(struct ieee80211_hw *hw)
2797 {
2798 return mwl8k_cmd_radio_control(hw, 1, 0);
2799 }
2800
2801 static int
2802 mwl8k_set_radio_preamble(struct ieee80211_hw *hw, bool short_preamble)
2803 {
2804 struct mwl8k_priv *priv = hw->priv;
2805
2806 priv->radio_short_preamble = short_preamble;
2807
2808 return mwl8k_cmd_radio_control(hw, 1, 1);
2809 }
2810
2811 /*
2812 * CMD_RF_TX_POWER.
2813 */
2814 #define MWL8K_RF_TX_POWER_LEVEL_TOTAL 8
2815
2816 struct mwl8k_cmd_rf_tx_power {
2817 struct mwl8k_cmd_pkt header;
2818 __le16 action;
2819 __le16 support_level;
2820 __le16 current_level;
2821 __le16 reserved;
2822 __le16 power_level_list[MWL8K_RF_TX_POWER_LEVEL_TOTAL];
2823 } __packed;
2824
2825 static int mwl8k_cmd_rf_tx_power(struct ieee80211_hw *hw, int dBm)
2826 {
2827 struct mwl8k_cmd_rf_tx_power *cmd;
2828 int rc;
2829
2830 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2831 if (cmd == NULL)
2832 return -ENOMEM;
2833
2834 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_TX_POWER);
2835 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2836 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
2837 cmd->support_level = cpu_to_le16(dBm);
2838
2839 rc = mwl8k_post_cmd(hw, &cmd->header);
2840 kfree(cmd);
2841
2842 return rc;
2843 }
2844
2845 /*
2846 * CMD_TX_POWER.
2847 */
2848 #define MWL8K_TX_POWER_LEVEL_TOTAL 12
2849
2850 struct mwl8k_cmd_tx_power {
2851 struct mwl8k_cmd_pkt header;
2852 __le16 action;
2853 __le16 band;
2854 __le16 channel;
2855 __le16 bw;
2856 __le16 sub_ch;
2857 __le16 power_level_list[MWL8K_TX_POWER_LEVEL_TOTAL];
2858 } __packed;
2859
2860 static int mwl8k_cmd_tx_power(struct ieee80211_hw *hw,
2861 struct ieee80211_conf *conf,
2862 unsigned short pwr)
2863 {
2864 struct ieee80211_channel *channel = conf->chandef.chan;
2865 enum nl80211_channel_type channel_type =
2866 cfg80211_get_chandef_type(&conf->chandef);
2867 struct mwl8k_cmd_tx_power *cmd;
2868 int rc;
2869 int i;
2870
2871 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2872 if (cmd == NULL)
2873 return -ENOMEM;
2874
2875 cmd->header.code = cpu_to_le16(MWL8K_CMD_TX_POWER);
2876 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2877 cmd->action = cpu_to_le16(MWL8K_CMD_SET_LIST);
2878
2879 if (channel->band == IEEE80211_BAND_2GHZ)
2880 cmd->band = cpu_to_le16(0x1);
2881 else if (channel->band == IEEE80211_BAND_5GHZ)
2882 cmd->band = cpu_to_le16(0x4);
2883
2884 cmd->channel = cpu_to_le16(channel->hw_value);
2885
2886 if (channel_type == NL80211_CHAN_NO_HT ||
2887 channel_type == NL80211_CHAN_HT20) {
2888 cmd->bw = cpu_to_le16(0x2);
2889 } else {
2890 cmd->bw = cpu_to_le16(0x4);
2891 if (channel_type == NL80211_CHAN_HT40MINUS)
2892 cmd->sub_ch = cpu_to_le16(0x3);
2893 else if (channel_type == NL80211_CHAN_HT40PLUS)
2894 cmd->sub_ch = cpu_to_le16(0x1);
2895 }
2896
2897 for (i = 0; i < MWL8K_TX_POWER_LEVEL_TOTAL; i++)
2898 cmd->power_level_list[i] = cpu_to_le16(pwr);
2899
2900 rc = mwl8k_post_cmd(hw, &cmd->header);
2901 kfree(cmd);
2902
2903 return rc;
2904 }
2905
2906 /*
2907 * CMD_RF_ANTENNA.
2908 */
2909 struct mwl8k_cmd_rf_antenna {
2910 struct mwl8k_cmd_pkt header;
2911 __le16 antenna;
2912 __le16 mode;
2913 } __packed;
2914
2915 #define MWL8K_RF_ANTENNA_RX 1
2916 #define MWL8K_RF_ANTENNA_TX 2
2917
2918 static int
2919 mwl8k_cmd_rf_antenna(struct ieee80211_hw *hw, int antenna, int mask)
2920 {
2921 struct mwl8k_cmd_rf_antenna *cmd;
2922 int rc;
2923
2924 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2925 if (cmd == NULL)
2926 return -ENOMEM;
2927
2928 cmd->header.code = cpu_to_le16(MWL8K_CMD_RF_ANTENNA);
2929 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2930 cmd->antenna = cpu_to_le16(antenna);
2931 cmd->mode = cpu_to_le16(mask);
2932
2933 rc = mwl8k_post_cmd(hw, &cmd->header);
2934 kfree(cmd);
2935
2936 return rc;
2937 }
2938
2939 /*
2940 * CMD_SET_BEACON.
2941 */
2942 struct mwl8k_cmd_set_beacon {
2943 struct mwl8k_cmd_pkt header;
2944 __le16 beacon_len;
2945 __u8 beacon[0];
2946 };
2947
2948 static int mwl8k_cmd_set_beacon(struct ieee80211_hw *hw,
2949 struct ieee80211_vif *vif, u8 *beacon, int len)
2950 {
2951 struct mwl8k_cmd_set_beacon *cmd;
2952 int rc;
2953
2954 cmd = kzalloc(sizeof(*cmd) + len, GFP_KERNEL);
2955 if (cmd == NULL)
2956 return -ENOMEM;
2957
2958 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_BEACON);
2959 cmd->header.length = cpu_to_le16(sizeof(*cmd) + len);
2960 cmd->beacon_len = cpu_to_le16(len);
2961 memcpy(cmd->beacon, beacon, len);
2962
2963 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
2964 kfree(cmd);
2965
2966 return rc;
2967 }
2968
2969 /*
2970 * CMD_SET_PRE_SCAN.
2971 */
2972 struct mwl8k_cmd_set_pre_scan {
2973 struct mwl8k_cmd_pkt header;
2974 } __packed;
2975
2976 static int mwl8k_cmd_set_pre_scan(struct ieee80211_hw *hw)
2977 {
2978 struct mwl8k_cmd_set_pre_scan *cmd;
2979 int rc;
2980
2981 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
2982 if (cmd == NULL)
2983 return -ENOMEM;
2984
2985 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_PRE_SCAN);
2986 cmd->header.length = cpu_to_le16(sizeof(*cmd));
2987
2988 rc = mwl8k_post_cmd(hw, &cmd->header);
2989 kfree(cmd);
2990
2991 return rc;
2992 }
2993
2994 /*
2995 * CMD_BBP_REG_ACCESS.
2996 */
2997 struct mwl8k_cmd_bbp_reg_access {
2998 struct mwl8k_cmd_pkt header;
2999 __le16 action;
3000 __le16 offset;
3001 u8 value;
3002 u8 rsrv[3];
3003 } __packed;
3004
3005 static int
3006 mwl8k_cmd_bbp_reg_access(struct ieee80211_hw *hw,
3007 u16 action,
3008 u16 offset,
3009 u8 *value)
3010 {
3011 struct mwl8k_cmd_bbp_reg_access *cmd;
3012 int rc;
3013
3014 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3015 if (cmd == NULL)
3016 return -ENOMEM;
3017
3018 cmd->header.code = cpu_to_le16(MWL8K_CMD_BBP_REG_ACCESS);
3019 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3020 cmd->action = cpu_to_le16(action);
3021 cmd->offset = cpu_to_le16(offset);
3022
3023 rc = mwl8k_post_cmd(hw, &cmd->header);
3024
3025 if (!rc)
3026 *value = cmd->value;
3027 else
3028 *value = 0;
3029
3030 kfree(cmd);
3031
3032 return rc;
3033 }
3034
3035 /*
3036 * CMD_SET_POST_SCAN.
3037 */
3038 struct mwl8k_cmd_set_post_scan {
3039 struct mwl8k_cmd_pkt header;
3040 __le32 isibss;
3041 __u8 bssid[ETH_ALEN];
3042 } __packed;
3043
3044 static int
3045 mwl8k_cmd_set_post_scan(struct ieee80211_hw *hw, const __u8 *mac)
3046 {
3047 struct mwl8k_cmd_set_post_scan *cmd;
3048 int rc;
3049
3050 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3051 if (cmd == NULL)
3052 return -ENOMEM;
3053
3054 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_POST_SCAN);
3055 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3056 cmd->isibss = 0;
3057 memcpy(cmd->bssid, mac, ETH_ALEN);
3058
3059 rc = mwl8k_post_cmd(hw, &cmd->header);
3060 kfree(cmd);
3061
3062 return rc;
3063 }
3064
3065 static int freq_to_idx(struct mwl8k_priv *priv, int freq)
3066 {
3067 struct ieee80211_supported_band *sband;
3068 int band, ch, idx = 0;
3069
3070 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
3071 sband = priv->hw->wiphy->bands[band];
3072 if (!sband)
3073 continue;
3074
3075 for (ch = 0; ch < sband->n_channels; ch++, idx++)
3076 if (sband->channels[ch].center_freq == freq)
3077 goto exit;
3078 }
3079
3080 exit:
3081 return idx;
3082 }
3083
3084 static void mwl8k_update_survey(struct mwl8k_priv *priv,
3085 struct ieee80211_channel *channel)
3086 {
3087 u32 cca_cnt, rx_rdy;
3088 s8 nf = 0, idx;
3089 struct survey_info *survey;
3090
3091 idx = freq_to_idx(priv, priv->acs_chan->center_freq);
3092 if (idx >= MWL8K_NUM_CHANS) {
3093 wiphy_err(priv->hw->wiphy, "Failed to update survey\n");
3094 return;
3095 }
3096
3097 survey = &priv->survey[idx];
3098
3099 cca_cnt = ioread32(priv->regs + NOK_CCA_CNT_REG);
3100 cca_cnt /= 1000; /* uSecs to mSecs */
3101 survey->time_busy = (u64) cca_cnt;
3102
3103 rx_rdy = ioread32(priv->regs + BBU_RXRDY_CNT_REG);
3104 rx_rdy /= 1000; /* uSecs to mSecs */
3105 survey->time_rx = (u64) rx_rdy;
3106
3107 priv->channel_time = jiffies - priv->channel_time;
3108 survey->time = jiffies_to_msecs(priv->channel_time);
3109
3110 survey->channel = channel;
3111
3112 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &nf);
3113
3114 /* Make sure sign is negative else ACS at hostapd fails */
3115 survey->noise = nf * -1;
3116
3117 survey->filled = SURVEY_INFO_NOISE_DBM |
3118 SURVEY_INFO_TIME |
3119 SURVEY_INFO_TIME_BUSY |
3120 SURVEY_INFO_TIME_RX;
3121 }
3122
3123 /*
3124 * CMD_SET_RF_CHANNEL.
3125 */
3126 struct mwl8k_cmd_set_rf_channel {
3127 struct mwl8k_cmd_pkt header;
3128 __le16 action;
3129 __u8 current_channel;
3130 __le32 channel_flags;
3131 } __packed;
3132
3133 static int mwl8k_cmd_set_rf_channel(struct ieee80211_hw *hw,
3134 struct ieee80211_conf *conf)
3135 {
3136 struct ieee80211_channel *channel = conf->chandef.chan;
3137 enum nl80211_channel_type channel_type =
3138 cfg80211_get_chandef_type(&conf->chandef);
3139 struct mwl8k_cmd_set_rf_channel *cmd;
3140 struct mwl8k_priv *priv = hw->priv;
3141 int rc;
3142
3143 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3144 if (cmd == NULL)
3145 return -ENOMEM;
3146
3147 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RF_CHANNEL);
3148 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3149 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3150 cmd->current_channel = channel->hw_value;
3151
3152 if (channel->band == IEEE80211_BAND_2GHZ)
3153 cmd->channel_flags |= cpu_to_le32(0x00000001);
3154 else if (channel->band == IEEE80211_BAND_5GHZ)
3155 cmd->channel_flags |= cpu_to_le32(0x00000004);
3156
3157 if (!priv->sw_scan_start) {
3158 if (channel_type == NL80211_CHAN_NO_HT ||
3159 channel_type == NL80211_CHAN_HT20)
3160 cmd->channel_flags |= cpu_to_le32(0x00000080);
3161 else if (channel_type == NL80211_CHAN_HT40MINUS)
3162 cmd->channel_flags |= cpu_to_le32(0x000001900);
3163 else if (channel_type == NL80211_CHAN_HT40PLUS)
3164 cmd->channel_flags |= cpu_to_le32(0x000000900);
3165 } else {
3166 cmd->channel_flags |= cpu_to_le32(0x00000080);
3167 }
3168
3169 if (priv->sw_scan_start) {
3170 /* Store current channel stats
3171 * before switching to newer one.
3172 * This will be processed only for AP fw.
3173 */
3174 if (priv->channel_time != 0)
3175 mwl8k_update_survey(priv, priv->acs_chan);
3176
3177 priv->channel_time = jiffies;
3178 priv->acs_chan = channel;
3179 }
3180
3181 rc = mwl8k_post_cmd(hw, &cmd->header);
3182 kfree(cmd);
3183
3184 return rc;
3185 }
3186
3187 /*
3188 * CMD_SET_AID.
3189 */
3190 #define MWL8K_FRAME_PROT_DISABLED 0x00
3191 #define MWL8K_FRAME_PROT_11G 0x07
3192 #define MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY 0x02
3193 #define MWL8K_FRAME_PROT_11N_HT_ALL 0x06
3194
3195 struct mwl8k_cmd_update_set_aid {
3196 struct mwl8k_cmd_pkt header;
3197 __le16 aid;
3198
3199 /* AP's MAC address (BSSID) */
3200 __u8 bssid[ETH_ALEN];
3201 __le16 protection_mode;
3202 __u8 supp_rates[14];
3203 } __packed;
3204
3205 static void legacy_rate_mask_to_array(u8 *rates, u32 mask)
3206 {
3207 int i;
3208 int j;
3209
3210 /*
3211 * Clear nonstandard rate 4.
3212 */
3213 mask &= 0x1fef;
3214
3215 for (i = 0, j = 0; i < 13; i++) {
3216 if (mask & (1 << i))
3217 rates[j++] = mwl8k_rates_24[i].hw_value;
3218 }
3219 }
3220
3221 static int
3222 mwl8k_cmd_set_aid(struct ieee80211_hw *hw,
3223 struct ieee80211_vif *vif, u32 legacy_rate_mask)
3224 {
3225 struct mwl8k_cmd_update_set_aid *cmd;
3226 u16 prot_mode;
3227 int rc;
3228
3229 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3230 if (cmd == NULL)
3231 return -ENOMEM;
3232
3233 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_AID);
3234 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3235 cmd->aid = cpu_to_le16(vif->bss_conf.aid);
3236 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
3237
3238 if (vif->bss_conf.use_cts_prot) {
3239 prot_mode = MWL8K_FRAME_PROT_11G;
3240 } else {
3241 switch (vif->bss_conf.ht_operation_mode &
3242 IEEE80211_HT_OP_MODE_PROTECTION) {
3243 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
3244 prot_mode = MWL8K_FRAME_PROT_11N_HT_40MHZ_ONLY;
3245 break;
3246 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
3247 prot_mode = MWL8K_FRAME_PROT_11N_HT_ALL;
3248 break;
3249 default:
3250 prot_mode = MWL8K_FRAME_PROT_DISABLED;
3251 break;
3252 }
3253 }
3254 cmd->protection_mode = cpu_to_le16(prot_mode);
3255
3256 legacy_rate_mask_to_array(cmd->supp_rates, legacy_rate_mask);
3257
3258 rc = mwl8k_post_cmd(hw, &cmd->header);
3259 kfree(cmd);
3260
3261 return rc;
3262 }
3263
3264 /*
3265 * CMD_SET_RATE.
3266 */
3267 struct mwl8k_cmd_set_rate {
3268 struct mwl8k_cmd_pkt header;
3269 __u8 legacy_rates[14];
3270
3271 /* Bitmap for supported MCS codes. */
3272 __u8 mcs_set[16];
3273 __u8 reserved[16];
3274 } __packed;
3275
3276 static int
3277 mwl8k_cmd_set_rate(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3278 u32 legacy_rate_mask, u8 *mcs_rates)
3279 {
3280 struct mwl8k_cmd_set_rate *cmd;
3281 int rc;
3282
3283 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3284 if (cmd == NULL)
3285 return -ENOMEM;
3286
3287 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATE);
3288 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3289 legacy_rate_mask_to_array(cmd->legacy_rates, legacy_rate_mask);
3290 memcpy(cmd->mcs_set, mcs_rates, 16);
3291
3292 rc = mwl8k_post_cmd(hw, &cmd->header);
3293 kfree(cmd);
3294
3295 return rc;
3296 }
3297
3298 /*
3299 * CMD_FINALIZE_JOIN.
3300 */
3301 #define MWL8K_FJ_BEACON_MAXLEN 128
3302
3303 struct mwl8k_cmd_finalize_join {
3304 struct mwl8k_cmd_pkt header;
3305 __le32 sleep_interval; /* Number of beacon periods to sleep */
3306 __u8 beacon_data[MWL8K_FJ_BEACON_MAXLEN];
3307 } __packed;
3308
3309 static int mwl8k_cmd_finalize_join(struct ieee80211_hw *hw, void *frame,
3310 int framelen, int dtim)
3311 {
3312 struct mwl8k_cmd_finalize_join *cmd;
3313 struct ieee80211_mgmt *payload = frame;
3314 int payload_len;
3315 int rc;
3316
3317 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3318 if (cmd == NULL)
3319 return -ENOMEM;
3320
3321 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_FINALIZE_JOIN);
3322 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3323 cmd->sleep_interval = cpu_to_le32(dtim ? dtim : 1);
3324
3325 payload_len = framelen - ieee80211_hdrlen(payload->frame_control);
3326 if (payload_len < 0)
3327 payload_len = 0;
3328 else if (payload_len > MWL8K_FJ_BEACON_MAXLEN)
3329 payload_len = MWL8K_FJ_BEACON_MAXLEN;
3330
3331 memcpy(cmd->beacon_data, &payload->u.beacon, payload_len);
3332
3333 rc = mwl8k_post_cmd(hw, &cmd->header);
3334 kfree(cmd);
3335
3336 return rc;
3337 }
3338
3339 /*
3340 * CMD_SET_RTS_THRESHOLD.
3341 */
3342 struct mwl8k_cmd_set_rts_threshold {
3343 struct mwl8k_cmd_pkt header;
3344 __le16 action;
3345 __le16 threshold;
3346 } __packed;
3347
3348 static int
3349 mwl8k_cmd_set_rts_threshold(struct ieee80211_hw *hw, int rts_thresh)
3350 {
3351 struct mwl8k_cmd_set_rts_threshold *cmd;
3352 int rc;
3353
3354 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3355 if (cmd == NULL)
3356 return -ENOMEM;
3357
3358 cmd->header.code = cpu_to_le16(MWL8K_CMD_RTS_THRESHOLD);
3359 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3360 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3361 cmd->threshold = cpu_to_le16(rts_thresh);
3362
3363 rc = mwl8k_post_cmd(hw, &cmd->header);
3364 kfree(cmd);
3365
3366 return rc;
3367 }
3368
3369 /*
3370 * CMD_SET_SLOT.
3371 */
3372 struct mwl8k_cmd_set_slot {
3373 struct mwl8k_cmd_pkt header;
3374 __le16 action;
3375 __u8 short_slot;
3376 } __packed;
3377
3378 static int mwl8k_cmd_set_slot(struct ieee80211_hw *hw, bool short_slot_time)
3379 {
3380 struct mwl8k_cmd_set_slot *cmd;
3381 int rc;
3382
3383 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3384 if (cmd == NULL)
3385 return -ENOMEM;
3386
3387 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_SLOT);
3388 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3389 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3390 cmd->short_slot = short_slot_time;
3391
3392 rc = mwl8k_post_cmd(hw, &cmd->header);
3393 kfree(cmd);
3394
3395 return rc;
3396 }
3397
3398 /*
3399 * CMD_SET_EDCA_PARAMS.
3400 */
3401 struct mwl8k_cmd_set_edca_params {
3402 struct mwl8k_cmd_pkt header;
3403
3404 /* See MWL8K_SET_EDCA_XXX below */
3405 __le16 action;
3406
3407 /* TX opportunity in units of 32 us */
3408 __le16 txop;
3409
3410 union {
3411 struct {
3412 /* Log exponent of max contention period: 0...15 */
3413 __le32 log_cw_max;
3414
3415 /* Log exponent of min contention period: 0...15 */
3416 __le32 log_cw_min;
3417
3418 /* Adaptive interframe spacing in units of 32us */
3419 __u8 aifs;
3420
3421 /* TX queue to configure */
3422 __u8 txq;
3423 } ap;
3424 struct {
3425 /* Log exponent of max contention period: 0...15 */
3426 __u8 log_cw_max;
3427
3428 /* Log exponent of min contention period: 0...15 */
3429 __u8 log_cw_min;
3430
3431 /* Adaptive interframe spacing in units of 32us */
3432 __u8 aifs;
3433
3434 /* TX queue to configure */
3435 __u8 txq;
3436 } sta;
3437 };
3438 } __packed;
3439
3440 #define MWL8K_SET_EDCA_CW 0x01
3441 #define MWL8K_SET_EDCA_TXOP 0x02
3442 #define MWL8K_SET_EDCA_AIFS 0x04
3443
3444 #define MWL8K_SET_EDCA_ALL (MWL8K_SET_EDCA_CW | \
3445 MWL8K_SET_EDCA_TXOP | \
3446 MWL8K_SET_EDCA_AIFS)
3447
3448 static int
3449 mwl8k_cmd_set_edca_params(struct ieee80211_hw *hw, __u8 qnum,
3450 __u16 cw_min, __u16 cw_max,
3451 __u8 aifs, __u16 txop)
3452 {
3453 struct mwl8k_priv *priv = hw->priv;
3454 struct mwl8k_cmd_set_edca_params *cmd;
3455 int rc;
3456
3457 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3458 if (cmd == NULL)
3459 return -ENOMEM;
3460
3461 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_EDCA_PARAMS);
3462 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3463 cmd->action = cpu_to_le16(MWL8K_SET_EDCA_ALL);
3464 cmd->txop = cpu_to_le16(txop);
3465 if (priv->ap_fw) {
3466 cmd->ap.log_cw_max = cpu_to_le32(ilog2(cw_max + 1));
3467 cmd->ap.log_cw_min = cpu_to_le32(ilog2(cw_min + 1));
3468 cmd->ap.aifs = aifs;
3469 cmd->ap.txq = qnum;
3470 } else {
3471 cmd->sta.log_cw_max = (u8)ilog2(cw_max + 1);
3472 cmd->sta.log_cw_min = (u8)ilog2(cw_min + 1);
3473 cmd->sta.aifs = aifs;
3474 cmd->sta.txq = qnum;
3475 }
3476
3477 rc = mwl8k_post_cmd(hw, &cmd->header);
3478 kfree(cmd);
3479
3480 return rc;
3481 }
3482
3483 /*
3484 * CMD_SET_WMM_MODE.
3485 */
3486 struct mwl8k_cmd_set_wmm_mode {
3487 struct mwl8k_cmd_pkt header;
3488 __le16 action;
3489 } __packed;
3490
3491 static int mwl8k_cmd_set_wmm_mode(struct ieee80211_hw *hw, bool enable)
3492 {
3493 struct mwl8k_priv *priv = hw->priv;
3494 struct mwl8k_cmd_set_wmm_mode *cmd;
3495 int rc;
3496
3497 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3498 if (cmd == NULL)
3499 return -ENOMEM;
3500
3501 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_WMM_MODE);
3502 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3503 cmd->action = cpu_to_le16(!!enable);
3504
3505 rc = mwl8k_post_cmd(hw, &cmd->header);
3506 kfree(cmd);
3507
3508 if (!rc)
3509 priv->wmm_enabled = enable;
3510
3511 return rc;
3512 }
3513
3514 /*
3515 * CMD_MIMO_CONFIG.
3516 */
3517 struct mwl8k_cmd_mimo_config {
3518 struct mwl8k_cmd_pkt header;
3519 __le32 action;
3520 __u8 rx_antenna_map;
3521 __u8 tx_antenna_map;
3522 } __packed;
3523
3524 static int mwl8k_cmd_mimo_config(struct ieee80211_hw *hw, __u8 rx, __u8 tx)
3525 {
3526 struct mwl8k_cmd_mimo_config *cmd;
3527 int rc;
3528
3529 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3530 if (cmd == NULL)
3531 return -ENOMEM;
3532
3533 cmd->header.code = cpu_to_le16(MWL8K_CMD_MIMO_CONFIG);
3534 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3535 cmd->action = cpu_to_le32((u32)MWL8K_CMD_SET);
3536 cmd->rx_antenna_map = rx;
3537 cmd->tx_antenna_map = tx;
3538
3539 rc = mwl8k_post_cmd(hw, &cmd->header);
3540 kfree(cmd);
3541
3542 return rc;
3543 }
3544
3545 /*
3546 * CMD_USE_FIXED_RATE (STA version).
3547 */
3548 struct mwl8k_cmd_use_fixed_rate_sta {
3549 struct mwl8k_cmd_pkt header;
3550 __le32 action;
3551 __le32 allow_rate_drop;
3552 __le32 num_rates;
3553 struct {
3554 __le32 is_ht_rate;
3555 __le32 enable_retry;
3556 __le32 rate;
3557 __le32 retry_count;
3558 } rate_entry[8];
3559 __le32 rate_type;
3560 __le32 reserved1;
3561 __le32 reserved2;
3562 } __packed;
3563
3564 #define MWL8K_USE_AUTO_RATE 0x0002
3565 #define MWL8K_UCAST_RATE 0
3566
3567 static int mwl8k_cmd_use_fixed_rate_sta(struct ieee80211_hw *hw)
3568 {
3569 struct mwl8k_cmd_use_fixed_rate_sta *cmd;
3570 int rc;
3571
3572 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3573 if (cmd == NULL)
3574 return -ENOMEM;
3575
3576 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3577 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3578 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3579 cmd->rate_type = cpu_to_le32(MWL8K_UCAST_RATE);
3580
3581 rc = mwl8k_post_cmd(hw, &cmd->header);
3582 kfree(cmd);
3583
3584 return rc;
3585 }
3586
3587 /*
3588 * CMD_USE_FIXED_RATE (AP version).
3589 */
3590 struct mwl8k_cmd_use_fixed_rate_ap {
3591 struct mwl8k_cmd_pkt header;
3592 __le32 action;
3593 __le32 allow_rate_drop;
3594 __le32 num_rates;
3595 struct mwl8k_rate_entry_ap {
3596 __le32 is_ht_rate;
3597 __le32 enable_retry;
3598 __le32 rate;
3599 __le32 retry_count;
3600 } rate_entry[4];
3601 u8 multicast_rate;
3602 u8 multicast_rate_type;
3603 u8 management_rate;
3604 } __packed;
3605
3606 static int
3607 mwl8k_cmd_use_fixed_rate_ap(struct ieee80211_hw *hw, int mcast, int mgmt)
3608 {
3609 struct mwl8k_cmd_use_fixed_rate_ap *cmd;
3610 int rc;
3611
3612 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3613 if (cmd == NULL)
3614 return -ENOMEM;
3615
3616 cmd->header.code = cpu_to_le16(MWL8K_CMD_USE_FIXED_RATE);
3617 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3618 cmd->action = cpu_to_le32(MWL8K_USE_AUTO_RATE);
3619 cmd->multicast_rate = mcast;
3620 cmd->management_rate = mgmt;
3621
3622 rc = mwl8k_post_cmd(hw, &cmd->header);
3623 kfree(cmd);
3624
3625 return rc;
3626 }
3627
3628 /*
3629 * CMD_ENABLE_SNIFFER.
3630 */
3631 struct mwl8k_cmd_enable_sniffer {
3632 struct mwl8k_cmd_pkt header;
3633 __le32 action;
3634 } __packed;
3635
3636 static int mwl8k_cmd_enable_sniffer(struct ieee80211_hw *hw, bool enable)
3637 {
3638 struct mwl8k_cmd_enable_sniffer *cmd;
3639 int rc;
3640
3641 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3642 if (cmd == NULL)
3643 return -ENOMEM;
3644
3645 cmd->header.code = cpu_to_le16(MWL8K_CMD_ENABLE_SNIFFER);
3646 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3647 cmd->action = cpu_to_le32(!!enable);
3648
3649 rc = mwl8k_post_cmd(hw, &cmd->header);
3650 kfree(cmd);
3651
3652 return rc;
3653 }
3654
3655 struct mwl8k_cmd_update_mac_addr {
3656 struct mwl8k_cmd_pkt header;
3657 union {
3658 struct {
3659 __le16 mac_type;
3660 __u8 mac_addr[ETH_ALEN];
3661 } mbss;
3662 __u8 mac_addr[ETH_ALEN];
3663 };
3664 } __packed;
3665
3666 #define MWL8K_MAC_TYPE_PRIMARY_CLIENT 0
3667 #define MWL8K_MAC_TYPE_SECONDARY_CLIENT 1
3668 #define MWL8K_MAC_TYPE_PRIMARY_AP 2
3669 #define MWL8K_MAC_TYPE_SECONDARY_AP 3
3670
3671 static int mwl8k_cmd_update_mac_addr(struct ieee80211_hw *hw,
3672 struct ieee80211_vif *vif, u8 *mac, bool set)
3673 {
3674 struct mwl8k_priv *priv = hw->priv;
3675 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3676 struct mwl8k_cmd_update_mac_addr *cmd;
3677 int mac_type;
3678 int rc;
3679
3680 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3681 if (vif != NULL && vif->type == NL80211_IFTYPE_STATION) {
3682 if (mwl8k_vif->macid + 1 == ffs(priv->sta_macids_supported))
3683 if (priv->ap_fw)
3684 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3685 else
3686 mac_type = MWL8K_MAC_TYPE_PRIMARY_CLIENT;
3687 else
3688 mac_type = MWL8K_MAC_TYPE_SECONDARY_CLIENT;
3689 } else if (vif != NULL && vif->type == NL80211_IFTYPE_AP) {
3690 if (mwl8k_vif->macid + 1 == ffs(priv->ap_macids_supported))
3691 mac_type = MWL8K_MAC_TYPE_PRIMARY_AP;
3692 else
3693 mac_type = MWL8K_MAC_TYPE_SECONDARY_AP;
3694 }
3695
3696 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3697 if (cmd == NULL)
3698 return -ENOMEM;
3699
3700 if (set)
3701 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_MAC_ADDR);
3702 else
3703 cmd->header.code = cpu_to_le16(MWL8K_CMD_DEL_MAC_ADDR);
3704
3705 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3706 if (priv->ap_fw) {
3707 cmd->mbss.mac_type = cpu_to_le16(mac_type);
3708 memcpy(cmd->mbss.mac_addr, mac, ETH_ALEN);
3709 } else {
3710 memcpy(cmd->mac_addr, mac, ETH_ALEN);
3711 }
3712
3713 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3714 kfree(cmd);
3715
3716 return rc;
3717 }
3718
3719 /*
3720 * MWL8K_CMD_SET_MAC_ADDR.
3721 */
3722 static inline int mwl8k_cmd_set_mac_addr(struct ieee80211_hw *hw,
3723 struct ieee80211_vif *vif, u8 *mac)
3724 {
3725 return mwl8k_cmd_update_mac_addr(hw, vif, mac, true);
3726 }
3727
3728 /*
3729 * MWL8K_CMD_DEL_MAC_ADDR.
3730 */
3731 static inline int mwl8k_cmd_del_mac_addr(struct ieee80211_hw *hw,
3732 struct ieee80211_vif *vif, u8 *mac)
3733 {
3734 return mwl8k_cmd_update_mac_addr(hw, vif, mac, false);
3735 }
3736
3737 /*
3738 * CMD_SET_RATEADAPT_MODE.
3739 */
3740 struct mwl8k_cmd_set_rate_adapt_mode {
3741 struct mwl8k_cmd_pkt header;
3742 __le16 action;
3743 __le16 mode;
3744 } __packed;
3745
3746 static int mwl8k_cmd_set_rateadapt_mode(struct ieee80211_hw *hw, __u16 mode)
3747 {
3748 struct mwl8k_cmd_set_rate_adapt_mode *cmd;
3749 int rc;
3750
3751 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3752 if (cmd == NULL)
3753 return -ENOMEM;
3754
3755 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_RATEADAPT_MODE);
3756 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3757 cmd->action = cpu_to_le16(MWL8K_CMD_SET);
3758 cmd->mode = cpu_to_le16(mode);
3759
3760 rc = mwl8k_post_cmd(hw, &cmd->header);
3761 kfree(cmd);
3762
3763 return rc;
3764 }
3765
3766 /*
3767 * CMD_GET_WATCHDOG_BITMAP.
3768 */
3769 struct mwl8k_cmd_get_watchdog_bitmap {
3770 struct mwl8k_cmd_pkt header;
3771 u8 bitmap;
3772 } __packed;
3773
3774 static int mwl8k_cmd_get_watchdog_bitmap(struct ieee80211_hw *hw, u8 *bitmap)
3775 {
3776 struct mwl8k_cmd_get_watchdog_bitmap *cmd;
3777 int rc;
3778
3779 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3780 if (cmd == NULL)
3781 return -ENOMEM;
3782
3783 cmd->header.code = cpu_to_le16(MWL8K_CMD_GET_WATCHDOG_BITMAP);
3784 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3785
3786 rc = mwl8k_post_cmd(hw, &cmd->header);
3787 if (!rc)
3788 *bitmap = cmd->bitmap;
3789
3790 kfree(cmd);
3791
3792 return rc;
3793 }
3794
3795 #define MWL8K_WMM_QUEUE_NUMBER 3
3796
3797 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
3798 u8 idx);
3799
3800 static void mwl8k_watchdog_ba_events(struct work_struct *work)
3801 {
3802 int rc;
3803 u8 bitmap = 0, stream_index;
3804 struct mwl8k_ampdu_stream *streams;
3805 struct mwl8k_priv *priv =
3806 container_of(work, struct mwl8k_priv, watchdog_ba_handle);
3807 struct ieee80211_hw *hw = priv->hw;
3808 int i;
3809 u32 status = 0;
3810
3811 mwl8k_fw_lock(hw);
3812
3813 rc = mwl8k_cmd_get_watchdog_bitmap(priv->hw, &bitmap);
3814 if (rc)
3815 goto done;
3816
3817 spin_lock(&priv->stream_lock);
3818
3819 /* the bitmap is the hw queue number. Map it to the ampdu queue. */
3820 for (i = 0; i < TOTAL_HW_TX_QUEUES; i++) {
3821 if (bitmap & (1 << i)) {
3822 stream_index = (i + MWL8K_WMM_QUEUE_NUMBER) %
3823 TOTAL_HW_TX_QUEUES;
3824 streams = &priv->ampdu[stream_index];
3825 if (streams->state == AMPDU_STREAM_ACTIVE) {
3826 ieee80211_stop_tx_ba_session(streams->sta,
3827 streams->tid);
3828 spin_unlock(&priv->stream_lock);
3829 mwl8k_destroy_ba(hw, stream_index);
3830 spin_lock(&priv->stream_lock);
3831 }
3832 }
3833 }
3834
3835 spin_unlock(&priv->stream_lock);
3836 done:
3837 atomic_dec(&priv->watchdog_event_pending);
3838 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3839 iowrite32((status | MWL8K_A2H_INT_BA_WATCHDOG),
3840 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
3841 mwl8k_fw_unlock(hw);
3842 return;
3843 }
3844
3845
3846 /*
3847 * CMD_BSS_START.
3848 */
3849 struct mwl8k_cmd_bss_start {
3850 struct mwl8k_cmd_pkt header;
3851 __le32 enable;
3852 } __packed;
3853
3854 static int mwl8k_cmd_bss_start(struct ieee80211_hw *hw,
3855 struct ieee80211_vif *vif, int enable)
3856 {
3857 struct mwl8k_cmd_bss_start *cmd;
3858 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
3859 struct mwl8k_priv *priv = hw->priv;
3860 int rc;
3861
3862 if (enable && (priv->running_bsses & (1 << mwl8k_vif->macid)))
3863 return 0;
3864
3865 if (!enable && !(priv->running_bsses & (1 << mwl8k_vif->macid)))
3866 return 0;
3867
3868 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3869 if (cmd == NULL)
3870 return -ENOMEM;
3871
3872 cmd->header.code = cpu_to_le16(MWL8K_CMD_BSS_START);
3873 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3874 cmd->enable = cpu_to_le32(enable);
3875
3876 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3877 kfree(cmd);
3878
3879 if (!rc) {
3880 if (enable)
3881 priv->running_bsses |= (1 << mwl8k_vif->macid);
3882 else
3883 priv->running_bsses &= ~(1 << mwl8k_vif->macid);
3884 }
3885 return rc;
3886 }
3887
3888 static void mwl8k_enable_bsses(struct ieee80211_hw *hw, bool enable, u32 bitmap)
3889 {
3890 struct mwl8k_priv *priv = hw->priv;
3891 struct mwl8k_vif *mwl8k_vif, *tmp_vif;
3892 struct ieee80211_vif *vif;
3893
3894 list_for_each_entry_safe(mwl8k_vif, tmp_vif, &priv->vif_list, list) {
3895 vif = mwl8k_vif->vif;
3896
3897 if (!(bitmap & (1 << mwl8k_vif->macid)))
3898 continue;
3899
3900 if (vif->type == NL80211_IFTYPE_AP)
3901 mwl8k_cmd_bss_start(hw, vif, enable);
3902 }
3903 }
3904 /*
3905 * CMD_BASTREAM.
3906 */
3907
3908 /*
3909 * UPSTREAM is tx direction
3910 */
3911 #define BASTREAM_FLAG_DIRECTION_UPSTREAM 0x00
3912 #define BASTREAM_FLAG_IMMEDIATE_TYPE 0x01
3913
3914 enum ba_stream_action_type {
3915 MWL8K_BA_CREATE,
3916 MWL8K_BA_UPDATE,
3917 MWL8K_BA_DESTROY,
3918 MWL8K_BA_FLUSH,
3919 MWL8K_BA_CHECK,
3920 };
3921
3922
3923 struct mwl8k_create_ba_stream {
3924 __le32 flags;
3925 __le32 idle_thrs;
3926 __le32 bar_thrs;
3927 __le32 window_size;
3928 u8 peer_mac_addr[6];
3929 u8 dialog_token;
3930 u8 tid;
3931 u8 queue_id;
3932 u8 param_info;
3933 __le32 ba_context;
3934 u8 reset_seq_no_flag;
3935 __le16 curr_seq_no;
3936 u8 sta_src_mac_addr[6];
3937 } __packed;
3938
3939 struct mwl8k_destroy_ba_stream {
3940 __le32 flags;
3941 __le32 ba_context;
3942 } __packed;
3943
3944 struct mwl8k_cmd_bastream {
3945 struct mwl8k_cmd_pkt header;
3946 __le32 action;
3947 union {
3948 struct mwl8k_create_ba_stream create_params;
3949 struct mwl8k_destroy_ba_stream destroy_params;
3950 };
3951 } __packed;
3952
3953 static int
3954 mwl8k_check_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3955 struct ieee80211_vif *vif)
3956 {
3957 struct mwl8k_cmd_bastream *cmd;
3958 int rc;
3959
3960 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3961 if (cmd == NULL)
3962 return -ENOMEM;
3963
3964 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3965 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3966
3967 cmd->action = cpu_to_le32(MWL8K_BA_CHECK);
3968
3969 cmd->create_params.queue_id = stream->idx;
3970 memcpy(&cmd->create_params.peer_mac_addr[0], stream->sta->addr,
3971 ETH_ALEN);
3972 cmd->create_params.tid = stream->tid;
3973
3974 cmd->create_params.flags =
3975 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE) |
3976 cpu_to_le32(BASTREAM_FLAG_DIRECTION_UPSTREAM);
3977
3978 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
3979
3980 kfree(cmd);
3981
3982 return rc;
3983 }
3984
3985 static int
3986 mwl8k_create_ba(struct ieee80211_hw *hw, struct mwl8k_ampdu_stream *stream,
3987 u8 buf_size, struct ieee80211_vif *vif)
3988 {
3989 struct mwl8k_cmd_bastream *cmd;
3990 int rc;
3991
3992 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
3993 if (cmd == NULL)
3994 return -ENOMEM;
3995
3996
3997 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
3998 cmd->header.length = cpu_to_le16(sizeof(*cmd));
3999
4000 cmd->action = cpu_to_le32(MWL8K_BA_CREATE);
4001
4002 cmd->create_params.bar_thrs = cpu_to_le32((u32)buf_size);
4003 cmd->create_params.window_size = cpu_to_le32((u32)buf_size);
4004 cmd->create_params.queue_id = stream->idx;
4005
4006 memcpy(cmd->create_params.peer_mac_addr, stream->sta->addr, ETH_ALEN);
4007 cmd->create_params.tid = stream->tid;
4008 cmd->create_params.curr_seq_no = cpu_to_le16(0);
4009 cmd->create_params.reset_seq_no_flag = 1;
4010
4011 cmd->create_params.param_info =
4012 (stream->sta->ht_cap.ampdu_factor &
4013 IEEE80211_HT_AMPDU_PARM_FACTOR) |
4014 ((stream->sta->ht_cap.ampdu_density << 2) &
4015 IEEE80211_HT_AMPDU_PARM_DENSITY);
4016
4017 cmd->create_params.flags =
4018 cpu_to_le32(BASTREAM_FLAG_IMMEDIATE_TYPE |
4019 BASTREAM_FLAG_DIRECTION_UPSTREAM);
4020
4021 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4022
4023 wiphy_debug(hw->wiphy, "Created a BA stream for %pM : tid %d\n",
4024 stream->sta->addr, stream->tid);
4025 kfree(cmd);
4026
4027 return rc;
4028 }
4029
4030 static void mwl8k_destroy_ba(struct ieee80211_hw *hw,
4031 u8 idx)
4032 {
4033 struct mwl8k_cmd_bastream *cmd;
4034
4035 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4036 if (cmd == NULL)
4037 return;
4038
4039 cmd->header.code = cpu_to_le16(MWL8K_CMD_BASTREAM);
4040 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4041 cmd->action = cpu_to_le32(MWL8K_BA_DESTROY);
4042
4043 cmd->destroy_params.ba_context = cpu_to_le32(idx);
4044 mwl8k_post_cmd(hw, &cmd->header);
4045
4046 wiphy_debug(hw->wiphy, "Deleted BA stream index %d\n", idx);
4047
4048 kfree(cmd);
4049 }
4050
4051 /*
4052 * CMD_SET_NEW_STN.
4053 */
4054 struct mwl8k_cmd_set_new_stn {
4055 struct mwl8k_cmd_pkt header;
4056 __le16 aid;
4057 __u8 mac_addr[6];
4058 __le16 stn_id;
4059 __le16 action;
4060 __le16 rsvd;
4061 __le32 legacy_rates;
4062 __u8 ht_rates[4];
4063 __le16 cap_info;
4064 __le16 ht_capabilities_info;
4065 __u8 mac_ht_param_info;
4066 __u8 rev;
4067 __u8 control_channel;
4068 __u8 add_channel;
4069 __le16 op_mode;
4070 __le16 stbc;
4071 __u8 add_qos_info;
4072 __u8 is_qos_sta;
4073 __le32 fw_sta_ptr;
4074 } __packed;
4075
4076 #define MWL8K_STA_ACTION_ADD 0
4077 #define MWL8K_STA_ACTION_REMOVE 2
4078
4079 static int mwl8k_cmd_set_new_stn_add(struct ieee80211_hw *hw,
4080 struct ieee80211_vif *vif,
4081 struct ieee80211_sta *sta)
4082 {
4083 struct mwl8k_cmd_set_new_stn *cmd;
4084 u32 rates;
4085 int rc;
4086
4087 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4088 if (cmd == NULL)
4089 return -ENOMEM;
4090
4091 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4092 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4093 cmd->aid = cpu_to_le16(sta->aid);
4094 memcpy(cmd->mac_addr, sta->addr, ETH_ALEN);
4095 cmd->stn_id = cpu_to_le16(sta->aid);
4096 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_ADD);
4097 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
4098 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4099 else
4100 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4101 cmd->legacy_rates = cpu_to_le32(rates);
4102 if (sta->ht_cap.ht_supported) {
4103 cmd->ht_rates[0] = sta->ht_cap.mcs.rx_mask[0];
4104 cmd->ht_rates[1] = sta->ht_cap.mcs.rx_mask[1];
4105 cmd->ht_rates[2] = sta->ht_cap.mcs.rx_mask[2];
4106 cmd->ht_rates[3] = sta->ht_cap.mcs.rx_mask[3];
4107 cmd->ht_capabilities_info = cpu_to_le16(sta->ht_cap.cap);
4108 cmd->mac_ht_param_info = (sta->ht_cap.ampdu_factor & 3) |
4109 ((sta->ht_cap.ampdu_density & 7) << 2);
4110 cmd->is_qos_sta = 1;
4111 }
4112
4113 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4114 kfree(cmd);
4115
4116 return rc;
4117 }
4118
4119 static int mwl8k_cmd_set_new_stn_add_self(struct ieee80211_hw *hw,
4120 struct ieee80211_vif *vif)
4121 {
4122 struct mwl8k_cmd_set_new_stn *cmd;
4123 int rc;
4124
4125 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4126 if (cmd == NULL)
4127 return -ENOMEM;
4128
4129 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4130 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4131 memcpy(cmd->mac_addr, vif->addr, ETH_ALEN);
4132
4133 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4134 kfree(cmd);
4135
4136 return rc;
4137 }
4138
4139 static int mwl8k_cmd_set_new_stn_del(struct ieee80211_hw *hw,
4140 struct ieee80211_vif *vif, u8 *addr)
4141 {
4142 struct mwl8k_cmd_set_new_stn *cmd;
4143 struct mwl8k_priv *priv = hw->priv;
4144 int rc, i;
4145 u8 idx;
4146
4147 spin_lock(&priv->stream_lock);
4148 /* Destroy any active ampdu streams for this sta */
4149 for (i = 0; i < MWL8K_NUM_AMPDU_STREAMS; i++) {
4150 struct mwl8k_ampdu_stream *s;
4151 s = &priv->ampdu[i];
4152 if (s->state != AMPDU_NO_STREAM) {
4153 if (memcmp(s->sta->addr, addr, ETH_ALEN) == 0) {
4154 if (s->state == AMPDU_STREAM_ACTIVE) {
4155 idx = s->idx;
4156 spin_unlock(&priv->stream_lock);
4157 mwl8k_destroy_ba(hw, idx);
4158 spin_lock(&priv->stream_lock);
4159 } else if (s->state == AMPDU_STREAM_NEW) {
4160 mwl8k_remove_stream(hw, s);
4161 }
4162 }
4163 }
4164 }
4165
4166 spin_unlock(&priv->stream_lock);
4167
4168 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4169 if (cmd == NULL)
4170 return -ENOMEM;
4171
4172 cmd->header.code = cpu_to_le16(MWL8K_CMD_SET_NEW_STN);
4173 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4174 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4175 cmd->action = cpu_to_le16(MWL8K_STA_ACTION_REMOVE);
4176
4177 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4178 kfree(cmd);
4179
4180 return rc;
4181 }
4182
4183 /*
4184 * CMD_UPDATE_ENCRYPTION.
4185 */
4186
4187 #define MAX_ENCR_KEY_LENGTH 16
4188 #define MIC_KEY_LENGTH 8
4189
4190 struct mwl8k_cmd_update_encryption {
4191 struct mwl8k_cmd_pkt header;
4192
4193 __le32 action;
4194 __le32 reserved;
4195 __u8 mac_addr[6];
4196 __u8 encr_type;
4197
4198 } __packed;
4199
4200 struct mwl8k_cmd_set_key {
4201 struct mwl8k_cmd_pkt header;
4202
4203 __le32 action;
4204 __le32 reserved;
4205 __le16 length;
4206 __le16 key_type_id;
4207 __le32 key_info;
4208 __le32 key_id;
4209 __le16 key_len;
4210 __u8 key_material[MAX_ENCR_KEY_LENGTH];
4211 __u8 tkip_tx_mic_key[MIC_KEY_LENGTH];
4212 __u8 tkip_rx_mic_key[MIC_KEY_LENGTH];
4213 __le16 tkip_rsc_low;
4214 __le32 tkip_rsc_high;
4215 __le16 tkip_tsc_low;
4216 __le32 tkip_tsc_high;
4217 __u8 mac_addr[6];
4218 } __packed;
4219
4220 enum {
4221 MWL8K_ENCR_ENABLE,
4222 MWL8K_ENCR_SET_KEY,
4223 MWL8K_ENCR_REMOVE_KEY,
4224 MWL8K_ENCR_SET_GROUP_KEY,
4225 };
4226
4227 #define MWL8K_UPDATE_ENCRYPTION_TYPE_WEP 0
4228 #define MWL8K_UPDATE_ENCRYPTION_TYPE_DISABLE 1
4229 #define MWL8K_UPDATE_ENCRYPTION_TYPE_TKIP 4
4230 #define MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED 7
4231 #define MWL8K_UPDATE_ENCRYPTION_TYPE_AES 8
4232
4233 enum {
4234 MWL8K_ALG_WEP,
4235 MWL8K_ALG_TKIP,
4236 MWL8K_ALG_CCMP,
4237 };
4238
4239 #define MWL8K_KEY_FLAG_TXGROUPKEY 0x00000004
4240 #define MWL8K_KEY_FLAG_PAIRWISE 0x00000008
4241 #define MWL8K_KEY_FLAG_TSC_VALID 0x00000040
4242 #define MWL8K_KEY_FLAG_WEP_TXKEY 0x01000000
4243 #define MWL8K_KEY_FLAG_MICKEY_VALID 0x02000000
4244
4245 static int mwl8k_cmd_update_encryption_enable(struct ieee80211_hw *hw,
4246 struct ieee80211_vif *vif,
4247 u8 *addr,
4248 u8 encr_type)
4249 {
4250 struct mwl8k_cmd_update_encryption *cmd;
4251 int rc;
4252
4253 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4254 if (cmd == NULL)
4255 return -ENOMEM;
4256
4257 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4258 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4259 cmd->action = cpu_to_le32(MWL8K_ENCR_ENABLE);
4260 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4261 cmd->encr_type = encr_type;
4262
4263 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4264 kfree(cmd);
4265
4266 return rc;
4267 }
4268
4269 static int mwl8k_encryption_set_cmd_info(struct mwl8k_cmd_set_key *cmd,
4270 u8 *addr,
4271 struct ieee80211_key_conf *key)
4272 {
4273 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_ENCRYPTION);
4274 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4275 cmd->length = cpu_to_le16(sizeof(*cmd) -
4276 offsetof(struct mwl8k_cmd_set_key, length));
4277 cmd->key_id = cpu_to_le32(key->keyidx);
4278 cmd->key_len = cpu_to_le16(key->keylen);
4279 memcpy(cmd->mac_addr, addr, ETH_ALEN);
4280
4281 switch (key->cipher) {
4282 case WLAN_CIPHER_SUITE_WEP40:
4283 case WLAN_CIPHER_SUITE_WEP104:
4284 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_WEP);
4285 if (key->keyidx == 0)
4286 cmd->key_info = cpu_to_le32(MWL8K_KEY_FLAG_WEP_TXKEY);
4287
4288 break;
4289 case WLAN_CIPHER_SUITE_TKIP:
4290 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_TKIP);
4291 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4292 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4293 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4294 cmd->key_info |= cpu_to_le32(MWL8K_KEY_FLAG_MICKEY_VALID
4295 | MWL8K_KEY_FLAG_TSC_VALID);
4296 break;
4297 case WLAN_CIPHER_SUITE_CCMP:
4298 cmd->key_type_id = cpu_to_le16(MWL8K_ALG_CCMP);
4299 cmd->key_info = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4300 ? cpu_to_le32(MWL8K_KEY_FLAG_PAIRWISE)
4301 : cpu_to_le32(MWL8K_KEY_FLAG_TXGROUPKEY);
4302 break;
4303 default:
4304 return -ENOTSUPP;
4305 }
4306
4307 return 0;
4308 }
4309
4310 static int mwl8k_cmd_encryption_set_key(struct ieee80211_hw *hw,
4311 struct ieee80211_vif *vif,
4312 u8 *addr,
4313 struct ieee80211_key_conf *key)
4314 {
4315 struct mwl8k_cmd_set_key *cmd;
4316 int rc;
4317 int keymlen;
4318 u32 action;
4319 u8 idx;
4320 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4321
4322 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4323 if (cmd == NULL)
4324 return -ENOMEM;
4325
4326 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4327 if (rc < 0)
4328 goto done;
4329
4330 idx = key->keyidx;
4331
4332 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
4333 action = MWL8K_ENCR_SET_KEY;
4334 else
4335 action = MWL8K_ENCR_SET_GROUP_KEY;
4336
4337 switch (key->cipher) {
4338 case WLAN_CIPHER_SUITE_WEP40:
4339 case WLAN_CIPHER_SUITE_WEP104:
4340 if (!mwl8k_vif->wep_key_conf[idx].enabled) {
4341 memcpy(mwl8k_vif->wep_key_conf[idx].key, key,
4342 sizeof(*key) + key->keylen);
4343 mwl8k_vif->wep_key_conf[idx].enabled = 1;
4344 }
4345
4346 keymlen = key->keylen;
4347 action = MWL8K_ENCR_SET_KEY;
4348 break;
4349 case WLAN_CIPHER_SUITE_TKIP:
4350 keymlen = MAX_ENCR_KEY_LENGTH + 2 * MIC_KEY_LENGTH;
4351 break;
4352 case WLAN_CIPHER_SUITE_CCMP:
4353 keymlen = key->keylen;
4354 break;
4355 default:
4356 rc = -ENOTSUPP;
4357 goto done;
4358 }
4359
4360 memcpy(cmd->key_material, key->key, keymlen);
4361 cmd->action = cpu_to_le32(action);
4362
4363 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4364 done:
4365 kfree(cmd);
4366
4367 return rc;
4368 }
4369
4370 static int mwl8k_cmd_encryption_remove_key(struct ieee80211_hw *hw,
4371 struct ieee80211_vif *vif,
4372 u8 *addr,
4373 struct ieee80211_key_conf *key)
4374 {
4375 struct mwl8k_cmd_set_key *cmd;
4376 int rc;
4377 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4378
4379 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4380 if (cmd == NULL)
4381 return -ENOMEM;
4382
4383 rc = mwl8k_encryption_set_cmd_info(cmd, addr, key);
4384 if (rc < 0)
4385 goto done;
4386
4387 if (key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
4388 key->cipher == WLAN_CIPHER_SUITE_WEP104)
4389 mwl8k_vif->wep_key_conf[key->keyidx].enabled = 0;
4390
4391 cmd->action = cpu_to_le32(MWL8K_ENCR_REMOVE_KEY);
4392
4393 rc = mwl8k_post_pervif_cmd(hw, vif, &cmd->header);
4394 done:
4395 kfree(cmd);
4396
4397 return rc;
4398 }
4399
4400 static int mwl8k_set_key(struct ieee80211_hw *hw,
4401 enum set_key_cmd cmd_param,
4402 struct ieee80211_vif *vif,
4403 struct ieee80211_sta *sta,
4404 struct ieee80211_key_conf *key)
4405 {
4406 int rc = 0;
4407 u8 encr_type;
4408 u8 *addr;
4409 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4410 struct mwl8k_priv *priv = hw->priv;
4411
4412 if (vif->type == NL80211_IFTYPE_STATION && !priv->ap_fw)
4413 return -EOPNOTSUPP;
4414
4415 if (sta == NULL)
4416 addr = vif->addr;
4417 else
4418 addr = sta->addr;
4419
4420 if (cmd_param == SET_KEY) {
4421 rc = mwl8k_cmd_encryption_set_key(hw, vif, addr, key);
4422 if (rc)
4423 goto out;
4424
4425 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40)
4426 || (key->cipher == WLAN_CIPHER_SUITE_WEP104))
4427 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_WEP;
4428 else
4429 encr_type = MWL8K_UPDATE_ENCRYPTION_TYPE_MIXED;
4430
4431 rc = mwl8k_cmd_update_encryption_enable(hw, vif, addr,
4432 encr_type);
4433 if (rc)
4434 goto out;
4435
4436 mwl8k_vif->is_hw_crypto_enabled = true;
4437
4438 } else {
4439 rc = mwl8k_cmd_encryption_remove_key(hw, vif, addr, key);
4440
4441 if (rc)
4442 goto out;
4443 }
4444 out:
4445 return rc;
4446 }
4447
4448 /*
4449 * CMD_UPDATE_STADB.
4450 */
4451 struct ewc_ht_info {
4452 __le16 control1;
4453 __le16 control2;
4454 __le16 control3;
4455 } __packed;
4456
4457 struct peer_capability_info {
4458 /* Peer type - AP vs. STA. */
4459 __u8 peer_type;
4460
4461 /* Basic 802.11 capabilities from assoc resp. */
4462 __le16 basic_caps;
4463
4464 /* Set if peer supports 802.11n high throughput (HT). */
4465 __u8 ht_support;
4466
4467 /* Valid if HT is supported. */
4468 __le16 ht_caps;
4469 __u8 extended_ht_caps;
4470 struct ewc_ht_info ewc_info;
4471
4472 /* Legacy rate table. Intersection of our rates and peer rates. */
4473 __u8 legacy_rates[12];
4474
4475 /* HT rate table. Intersection of our rates and peer rates. */
4476 __u8 ht_rates[16];
4477 __u8 pad[16];
4478
4479 /* If set, interoperability mode, no proprietary extensions. */
4480 __u8 interop;
4481 __u8 pad2;
4482 __u8 station_id;
4483 __le16 amsdu_enabled;
4484 } __packed;
4485
4486 struct mwl8k_cmd_update_stadb {
4487 struct mwl8k_cmd_pkt header;
4488
4489 /* See STADB_ACTION_TYPE */
4490 __le32 action;
4491
4492 /* Peer MAC address */
4493 __u8 peer_addr[ETH_ALEN];
4494
4495 __le32 reserved;
4496
4497 /* Peer info - valid during add/update. */
4498 struct peer_capability_info peer_info;
4499 } __packed;
4500
4501 #define MWL8K_STA_DB_MODIFY_ENTRY 1
4502 #define MWL8K_STA_DB_DEL_ENTRY 2
4503
4504 /* Peer Entry flags - used to define the type of the peer node */
4505 #define MWL8K_PEER_TYPE_ACCESSPOINT 2
4506
4507 static int mwl8k_cmd_update_stadb_add(struct ieee80211_hw *hw,
4508 struct ieee80211_vif *vif,
4509 struct ieee80211_sta *sta)
4510 {
4511 struct mwl8k_cmd_update_stadb *cmd;
4512 struct peer_capability_info *p;
4513 u32 rates;
4514 int rc;
4515
4516 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4517 if (cmd == NULL)
4518 return -ENOMEM;
4519
4520 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4521 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4522 cmd->action = cpu_to_le32(MWL8K_STA_DB_MODIFY_ENTRY);
4523 memcpy(cmd->peer_addr, sta->addr, ETH_ALEN);
4524
4525 p = &cmd->peer_info;
4526 p->peer_type = MWL8K_PEER_TYPE_ACCESSPOINT;
4527 p->basic_caps = cpu_to_le16(vif->bss_conf.assoc_capability);
4528 p->ht_support = sta->ht_cap.ht_supported;
4529 p->ht_caps = cpu_to_le16(sta->ht_cap.cap);
4530 p->extended_ht_caps = (sta->ht_cap.ampdu_factor & 3) |
4531 ((sta->ht_cap.ampdu_density & 7) << 2);
4532 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
4533 rates = sta->supp_rates[IEEE80211_BAND_2GHZ];
4534 else
4535 rates = sta->supp_rates[IEEE80211_BAND_5GHZ] << 5;
4536 legacy_rate_mask_to_array(p->legacy_rates, rates);
4537 memcpy(p->ht_rates, sta->ht_cap.mcs.rx_mask, 16);
4538 p->interop = 1;
4539 p->amsdu_enabled = 0;
4540
4541 rc = mwl8k_post_cmd(hw, &cmd->header);
4542 if (!rc)
4543 rc = p->station_id;
4544 kfree(cmd);
4545
4546 return rc;
4547 }
4548
4549 static int mwl8k_cmd_update_stadb_del(struct ieee80211_hw *hw,
4550 struct ieee80211_vif *vif, u8 *addr)
4551 {
4552 struct mwl8k_cmd_update_stadb *cmd;
4553 int rc;
4554
4555 cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
4556 if (cmd == NULL)
4557 return -ENOMEM;
4558
4559 cmd->header.code = cpu_to_le16(MWL8K_CMD_UPDATE_STADB);
4560 cmd->header.length = cpu_to_le16(sizeof(*cmd));
4561 cmd->action = cpu_to_le32(MWL8K_STA_DB_DEL_ENTRY);
4562 memcpy(cmd->peer_addr, addr, ETH_ALEN);
4563
4564 rc = mwl8k_post_cmd(hw, &cmd->header);
4565 kfree(cmd);
4566
4567 return rc;
4568 }
4569
4570
4571 /*
4572 * Interrupt handling.
4573 */
4574 static irqreturn_t mwl8k_interrupt(int irq, void *dev_id)
4575 {
4576 struct ieee80211_hw *hw = dev_id;
4577 struct mwl8k_priv *priv = hw->priv;
4578 u32 status;
4579
4580 status = ioread32(priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4581 if (!status)
4582 return IRQ_NONE;
4583
4584 if (status & MWL8K_A2H_INT_TX_DONE) {
4585 status &= ~MWL8K_A2H_INT_TX_DONE;
4586 tasklet_schedule(&priv->poll_tx_task);
4587 }
4588
4589 if (status & MWL8K_A2H_INT_RX_READY) {
4590 status &= ~MWL8K_A2H_INT_RX_READY;
4591 tasklet_schedule(&priv->poll_rx_task);
4592 }
4593
4594 if (status & MWL8K_A2H_INT_BA_WATCHDOG) {
4595 iowrite32(~MWL8K_A2H_INT_BA_WATCHDOG,
4596 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4597
4598 atomic_inc(&priv->watchdog_event_pending);
4599 status &= ~MWL8K_A2H_INT_BA_WATCHDOG;
4600 ieee80211_queue_work(hw, &priv->watchdog_ba_handle);
4601 }
4602
4603 if (status)
4604 iowrite32(~status, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4605
4606 if (status & MWL8K_A2H_INT_OPC_DONE) {
4607 if (priv->hostcmd_wait != NULL)
4608 complete(priv->hostcmd_wait);
4609 }
4610
4611 if (status & MWL8K_A2H_INT_QUEUE_EMPTY) {
4612 if (!mutex_is_locked(&priv->fw_mutex) &&
4613 priv->radio_on && priv->pending_tx_pkts)
4614 mwl8k_tx_start(priv);
4615 }
4616
4617 return IRQ_HANDLED;
4618 }
4619
4620 static void mwl8k_tx_poll(unsigned long data)
4621 {
4622 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4623 struct mwl8k_priv *priv = hw->priv;
4624 int limit;
4625 int i;
4626
4627 limit = 32;
4628
4629 spin_lock_bh(&priv->tx_lock);
4630
4631 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4632 limit -= mwl8k_txq_reclaim(hw, i, limit, 0);
4633
4634 if (!priv->pending_tx_pkts && priv->tx_wait != NULL) {
4635 complete(priv->tx_wait);
4636 priv->tx_wait = NULL;
4637 }
4638
4639 spin_unlock_bh(&priv->tx_lock);
4640
4641 if (limit) {
4642 writel(~MWL8K_A2H_INT_TX_DONE,
4643 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4644 } else {
4645 tasklet_schedule(&priv->poll_tx_task);
4646 }
4647 }
4648
4649 static void mwl8k_rx_poll(unsigned long data)
4650 {
4651 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
4652 struct mwl8k_priv *priv = hw->priv;
4653 int limit;
4654
4655 limit = 32;
4656 limit -= rxq_process(hw, 0, limit);
4657 limit -= rxq_refill(hw, 0, limit);
4658
4659 if (limit) {
4660 writel(~MWL8K_A2H_INT_RX_READY,
4661 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
4662 } else {
4663 tasklet_schedule(&priv->poll_rx_task);
4664 }
4665 }
4666
4667
4668 /*
4669 * Core driver operations.
4670 */
4671 static void mwl8k_tx(struct ieee80211_hw *hw,
4672 struct ieee80211_tx_control *control,
4673 struct sk_buff *skb)
4674 {
4675 struct mwl8k_priv *priv = hw->priv;
4676 int index = skb_get_queue_mapping(skb);
4677
4678 if (!priv->radio_on) {
4679 wiphy_debug(hw->wiphy,
4680 "dropped TX frame since radio disabled\n");
4681 dev_kfree_skb(skb);
4682 return;
4683 }
4684
4685 mwl8k_txq_xmit(hw, index, control->sta, skb);
4686 }
4687
4688 static int mwl8k_start(struct ieee80211_hw *hw)
4689 {
4690 struct mwl8k_priv *priv = hw->priv;
4691 int rc;
4692
4693 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
4694 IRQF_SHARED, MWL8K_NAME, hw);
4695 if (rc) {
4696 priv->irq = -1;
4697 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
4698 return -EIO;
4699 }
4700 priv->irq = priv->pdev->irq;
4701
4702 /* Enable TX reclaim and RX tasklets. */
4703 tasklet_enable(&priv->poll_tx_task);
4704 tasklet_enable(&priv->poll_rx_task);
4705
4706 /* Enable interrupts */
4707 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4708 iowrite32(MWL8K_A2H_EVENTS,
4709 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
4710
4711 rc = mwl8k_fw_lock(hw);
4712 if (!rc) {
4713 rc = mwl8k_cmd_radio_enable(hw);
4714
4715 if (!priv->ap_fw) {
4716 if (!rc)
4717 rc = mwl8k_cmd_enable_sniffer(hw, 0);
4718
4719 if (!rc)
4720 rc = mwl8k_cmd_set_pre_scan(hw);
4721
4722 if (!rc)
4723 rc = mwl8k_cmd_set_post_scan(hw,
4724 "\x00\x00\x00\x00\x00\x00");
4725 }
4726
4727 if (!rc)
4728 rc = mwl8k_cmd_set_rateadapt_mode(hw, 0);
4729
4730 if (!rc)
4731 rc = mwl8k_cmd_set_wmm_mode(hw, 0);
4732
4733 mwl8k_fw_unlock(hw);
4734 }
4735
4736 if (rc) {
4737 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4738 free_irq(priv->pdev->irq, hw);
4739 priv->irq = -1;
4740 tasklet_disable(&priv->poll_tx_task);
4741 tasklet_disable(&priv->poll_rx_task);
4742 } else {
4743 ieee80211_wake_queues(hw);
4744 }
4745
4746 return rc;
4747 }
4748
4749 static void mwl8k_stop(struct ieee80211_hw *hw)
4750 {
4751 struct mwl8k_priv *priv = hw->priv;
4752 int i;
4753
4754 if (!priv->hw_restart_in_progress)
4755 mwl8k_cmd_radio_disable(hw);
4756
4757 ieee80211_stop_queues(hw);
4758
4759 /* Disable interrupts */
4760 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
4761 if (priv->irq != -1) {
4762 free_irq(priv->pdev->irq, hw);
4763 priv->irq = -1;
4764 }
4765
4766 /* Stop finalize join worker */
4767 cancel_work_sync(&priv->finalize_join_worker);
4768 cancel_work_sync(&priv->watchdog_ba_handle);
4769 if (priv->beacon_skb != NULL)
4770 dev_kfree_skb(priv->beacon_skb);
4771
4772 /* Stop TX reclaim and RX tasklets. */
4773 tasklet_disable(&priv->poll_tx_task);
4774 tasklet_disable(&priv->poll_rx_task);
4775
4776 /* Return all skbs to mac80211 */
4777 for (i = 0; i < mwl8k_tx_queues(priv); i++)
4778 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
4779 }
4780
4781 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image);
4782
4783 static int mwl8k_add_interface(struct ieee80211_hw *hw,
4784 struct ieee80211_vif *vif)
4785 {
4786 struct mwl8k_priv *priv = hw->priv;
4787 struct mwl8k_vif *mwl8k_vif;
4788 u32 macids_supported;
4789 int macid, rc;
4790 struct mwl8k_device_info *di;
4791
4792 /*
4793 * Reject interface creation if sniffer mode is active, as
4794 * STA operation is mutually exclusive with hardware sniffer
4795 * mode. (Sniffer mode is only used on STA firmware.)
4796 */
4797 if (priv->sniffer_enabled) {
4798 wiphy_info(hw->wiphy,
4799 "unable to create STA interface because sniffer mode is enabled\n");
4800 return -EINVAL;
4801 }
4802
4803 di = priv->device_info;
4804 switch (vif->type) {
4805 case NL80211_IFTYPE_AP:
4806 if (!priv->ap_fw && di->fw_image_ap) {
4807 /* we must load the ap fw to meet this request */
4808 if (!list_empty(&priv->vif_list))
4809 return -EBUSY;
4810 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4811 if (rc)
4812 return rc;
4813 }
4814 macids_supported = priv->ap_macids_supported;
4815 break;
4816 case NL80211_IFTYPE_STATION:
4817 if (priv->ap_fw && di->fw_image_sta) {
4818 if (!list_empty(&priv->vif_list)) {
4819 wiphy_warn(hw->wiphy, "AP interface is running.\n"
4820 "Adding STA interface for WDS");
4821 } else {
4822 /* we must load the sta fw to
4823 * meet this request.
4824 */
4825 rc = mwl8k_reload_firmware(hw,
4826 di->fw_image_sta);
4827 if (rc)
4828 return rc;
4829 }
4830 }
4831 macids_supported = priv->sta_macids_supported;
4832 break;
4833 default:
4834 return -EINVAL;
4835 }
4836
4837 macid = ffs(macids_supported & ~priv->macids_used);
4838 if (!macid--)
4839 return -EBUSY;
4840
4841 /* Setup driver private area. */
4842 mwl8k_vif = MWL8K_VIF(vif);
4843 memset(mwl8k_vif, 0, sizeof(*mwl8k_vif));
4844 mwl8k_vif->vif = vif;
4845 mwl8k_vif->macid = macid;
4846 mwl8k_vif->seqno = 0;
4847 memcpy(mwl8k_vif->bssid, vif->addr, ETH_ALEN);
4848 mwl8k_vif->is_hw_crypto_enabled = false;
4849
4850 /* Set the mac address. */
4851 mwl8k_cmd_set_mac_addr(hw, vif, vif->addr);
4852
4853 if (vif->type == NL80211_IFTYPE_AP)
4854 mwl8k_cmd_set_new_stn_add_self(hw, vif);
4855
4856 priv->macids_used |= 1 << mwl8k_vif->macid;
4857 list_add_tail(&mwl8k_vif->list, &priv->vif_list);
4858
4859 return 0;
4860 }
4861
4862 static void mwl8k_remove_vif(struct mwl8k_priv *priv, struct mwl8k_vif *vif)
4863 {
4864 /* Has ieee80211_restart_hw re-added the removed interfaces? */
4865 if (!priv->macids_used)
4866 return;
4867
4868 priv->macids_used &= ~(1 << vif->macid);
4869 list_del(&vif->list);
4870 }
4871
4872 static void mwl8k_remove_interface(struct ieee80211_hw *hw,
4873 struct ieee80211_vif *vif)
4874 {
4875 struct mwl8k_priv *priv = hw->priv;
4876 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
4877
4878 if (vif->type == NL80211_IFTYPE_AP)
4879 mwl8k_cmd_set_new_stn_del(hw, vif, vif->addr);
4880
4881 mwl8k_cmd_del_mac_addr(hw, vif, vif->addr);
4882
4883 mwl8k_remove_vif(priv, mwl8k_vif);
4884 }
4885
4886 static void mwl8k_hw_restart_work(struct work_struct *work)
4887 {
4888 struct mwl8k_priv *priv =
4889 container_of(work, struct mwl8k_priv, fw_reload);
4890 struct ieee80211_hw *hw = priv->hw;
4891 struct mwl8k_device_info *di;
4892 int rc;
4893
4894 /* If some command is waiting for a response, clear it */
4895 if (priv->hostcmd_wait != NULL) {
4896 complete(priv->hostcmd_wait);
4897 priv->hostcmd_wait = NULL;
4898 }
4899
4900 priv->hw_restart_owner = current;
4901 di = priv->device_info;
4902 mwl8k_fw_lock(hw);
4903
4904 if (priv->ap_fw)
4905 rc = mwl8k_reload_firmware(hw, di->fw_image_ap);
4906 else
4907 rc = mwl8k_reload_firmware(hw, di->fw_image_sta);
4908
4909 if (rc)
4910 goto fail;
4911
4912 priv->hw_restart_owner = NULL;
4913 priv->hw_restart_in_progress = false;
4914
4915 /*
4916 * This unlock will wake up the queues and
4917 * also opens the command path for other
4918 * commands
4919 */
4920 mwl8k_fw_unlock(hw);
4921
4922 ieee80211_restart_hw(hw);
4923
4924 wiphy_err(hw->wiphy, "Firmware restarted successfully\n");
4925
4926 return;
4927 fail:
4928 mwl8k_fw_unlock(hw);
4929
4930 wiphy_err(hw->wiphy, "Firmware restart failed\n");
4931 }
4932
4933 static int mwl8k_config(struct ieee80211_hw *hw, u32 changed)
4934 {
4935 struct ieee80211_conf *conf = &hw->conf;
4936 struct mwl8k_priv *priv = hw->priv;
4937 int rc;
4938
4939 rc = mwl8k_fw_lock(hw);
4940 if (rc)
4941 return rc;
4942
4943 if (conf->flags & IEEE80211_CONF_IDLE)
4944 rc = mwl8k_cmd_radio_disable(hw);
4945 else
4946 rc = mwl8k_cmd_radio_enable(hw);
4947 if (rc)
4948 goto out;
4949
4950 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
4951 rc = mwl8k_cmd_set_rf_channel(hw, conf);
4952 if (rc)
4953 goto out;
4954 }
4955
4956 if (conf->power_level > 18)
4957 conf->power_level = 18;
4958
4959 if (priv->ap_fw) {
4960
4961 if (conf->flags & IEEE80211_CONF_CHANGE_POWER) {
4962 rc = mwl8k_cmd_tx_power(hw, conf, conf->power_level);
4963 if (rc)
4964 goto out;
4965 }
4966
4967
4968 } else {
4969 rc = mwl8k_cmd_rf_tx_power(hw, conf->power_level);
4970 if (rc)
4971 goto out;
4972 rc = mwl8k_cmd_mimo_config(hw, 0x7, 0x7);
4973 }
4974
4975 out:
4976 mwl8k_fw_unlock(hw);
4977
4978 return rc;
4979 }
4980
4981 static void
4982 mwl8k_bss_info_changed_sta(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4983 struct ieee80211_bss_conf *info, u32 changed)
4984 {
4985 struct mwl8k_priv *priv = hw->priv;
4986 u32 ap_legacy_rates = 0;
4987 u8 ap_mcs_rates[16];
4988 int rc;
4989
4990 if (mwl8k_fw_lock(hw))
4991 return;
4992
4993 /*
4994 * No need to capture a beacon if we're no longer associated.
4995 */
4996 if ((changed & BSS_CHANGED_ASSOC) && !vif->bss_conf.assoc)
4997 priv->capture_beacon = false;
4998
4999 /*
5000 * Get the AP's legacy and MCS rates.
5001 */
5002 if (vif->bss_conf.assoc) {
5003 struct ieee80211_sta *ap;
5004
5005 rcu_read_lock();
5006
5007 ap = ieee80211_find_sta(vif, vif->bss_conf.bssid);
5008 if (ap == NULL) {
5009 rcu_read_unlock();
5010 goto out;
5011 }
5012
5013 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ) {
5014 ap_legacy_rates = ap->supp_rates[IEEE80211_BAND_2GHZ];
5015 } else {
5016 ap_legacy_rates =
5017 ap->supp_rates[IEEE80211_BAND_5GHZ] << 5;
5018 }
5019 memcpy(ap_mcs_rates, ap->ht_cap.mcs.rx_mask, 16);
5020
5021 rcu_read_unlock();
5022 }
5023
5024 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
5025 !priv->ap_fw) {
5026 rc = mwl8k_cmd_set_rate(hw, vif, ap_legacy_rates, ap_mcs_rates);
5027 if (rc)
5028 goto out;
5029
5030 rc = mwl8k_cmd_use_fixed_rate_sta(hw);
5031 if (rc)
5032 goto out;
5033 } else {
5034 if ((changed & BSS_CHANGED_ASSOC) && vif->bss_conf.assoc &&
5035 priv->ap_fw) {
5036 int idx;
5037 int rate;
5038
5039 /* Use AP firmware specific rate command.
5040 */
5041 idx = ffs(vif->bss_conf.basic_rates);
5042 if (idx)
5043 idx--;
5044
5045 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
5046 rate = mwl8k_rates_24[idx].hw_value;
5047 else
5048 rate = mwl8k_rates_50[idx].hw_value;
5049
5050 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5051 }
5052 }
5053
5054 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5055 rc = mwl8k_set_radio_preamble(hw,
5056 vif->bss_conf.use_short_preamble);
5057 if (rc)
5058 goto out;
5059 }
5060
5061 if ((changed & BSS_CHANGED_ERP_SLOT) && !priv->ap_fw) {
5062 rc = mwl8k_cmd_set_slot(hw, vif->bss_conf.use_short_slot);
5063 if (rc)
5064 goto out;
5065 }
5066
5067 if (vif->bss_conf.assoc && !priv->ap_fw &&
5068 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_CTS_PROT |
5069 BSS_CHANGED_HT))) {
5070 rc = mwl8k_cmd_set_aid(hw, vif, ap_legacy_rates);
5071 if (rc)
5072 goto out;
5073 }
5074
5075 if (vif->bss_conf.assoc &&
5076 (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INT))) {
5077 /*
5078 * Finalize the join. Tell rx handler to process
5079 * next beacon from our BSSID.
5080 */
5081 memcpy(priv->capture_bssid, vif->bss_conf.bssid, ETH_ALEN);
5082 priv->capture_beacon = true;
5083 }
5084
5085 out:
5086 mwl8k_fw_unlock(hw);
5087 }
5088
5089 static void
5090 mwl8k_bss_info_changed_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5091 struct ieee80211_bss_conf *info, u32 changed)
5092 {
5093 int rc;
5094
5095 if (mwl8k_fw_lock(hw))
5096 return;
5097
5098 if (changed & BSS_CHANGED_ERP_PREAMBLE) {
5099 rc = mwl8k_set_radio_preamble(hw,
5100 vif->bss_conf.use_short_preamble);
5101 if (rc)
5102 goto out;
5103 }
5104
5105 if (changed & BSS_CHANGED_BASIC_RATES) {
5106 int idx;
5107 int rate;
5108
5109 /*
5110 * Use lowest supported basic rate for multicasts
5111 * and management frames (such as probe responses --
5112 * beacons will always go out at 1 Mb/s).
5113 */
5114 idx = ffs(vif->bss_conf.basic_rates);
5115 if (idx)
5116 idx--;
5117
5118 if (hw->conf.chandef.chan->band == IEEE80211_BAND_2GHZ)
5119 rate = mwl8k_rates_24[idx].hw_value;
5120 else
5121 rate = mwl8k_rates_50[idx].hw_value;
5122
5123 mwl8k_cmd_use_fixed_rate_ap(hw, rate, rate);
5124 }
5125
5126 if (changed & (BSS_CHANGED_BEACON_INT | BSS_CHANGED_BEACON)) {
5127 struct sk_buff *skb;
5128
5129 skb = ieee80211_beacon_get(hw, vif);
5130 if (skb != NULL) {
5131 mwl8k_cmd_set_beacon(hw, vif, skb->data, skb->len);
5132 kfree_skb(skb);
5133 }
5134 }
5135
5136 if (changed & BSS_CHANGED_BEACON_ENABLED)
5137 mwl8k_cmd_bss_start(hw, vif, info->enable_beacon);
5138
5139 out:
5140 mwl8k_fw_unlock(hw);
5141 }
5142
5143 static void
5144 mwl8k_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5145 struct ieee80211_bss_conf *info, u32 changed)
5146 {
5147 if (vif->type == NL80211_IFTYPE_STATION)
5148 mwl8k_bss_info_changed_sta(hw, vif, info, changed);
5149 if (vif->type == NL80211_IFTYPE_AP)
5150 mwl8k_bss_info_changed_ap(hw, vif, info, changed);
5151 }
5152
5153 static u64 mwl8k_prepare_multicast(struct ieee80211_hw *hw,
5154 struct netdev_hw_addr_list *mc_list)
5155 {
5156 struct mwl8k_cmd_pkt *cmd;
5157
5158 /*
5159 * Synthesize and return a command packet that programs the
5160 * hardware multicast address filter. At this point we don't
5161 * know whether FIF_ALLMULTI is being requested, but if it is,
5162 * we'll end up throwing this packet away and creating a new
5163 * one in mwl8k_configure_filter().
5164 */
5165 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 0, mc_list);
5166
5167 return (unsigned long)cmd;
5168 }
5169
5170 static int
5171 mwl8k_configure_filter_sniffer(struct ieee80211_hw *hw,
5172 unsigned int changed_flags,
5173 unsigned int *total_flags)
5174 {
5175 struct mwl8k_priv *priv = hw->priv;
5176
5177 /*
5178 * Hardware sniffer mode is mutually exclusive with STA
5179 * operation, so refuse to enable sniffer mode if a STA
5180 * interface is active.
5181 */
5182 if (!list_empty(&priv->vif_list)) {
5183 if (net_ratelimit())
5184 wiphy_info(hw->wiphy,
5185 "not enabling sniffer mode because STA interface is active\n");
5186 return 0;
5187 }
5188
5189 if (!priv->sniffer_enabled) {
5190 if (mwl8k_cmd_enable_sniffer(hw, 1))
5191 return 0;
5192 priv->sniffer_enabled = true;
5193 }
5194
5195 *total_flags &= FIF_PROMISC_IN_BSS | FIF_ALLMULTI |
5196 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL |
5197 FIF_OTHER_BSS;
5198
5199 return 1;
5200 }
5201
5202 static struct mwl8k_vif *mwl8k_first_vif(struct mwl8k_priv *priv)
5203 {
5204 if (!list_empty(&priv->vif_list))
5205 return list_entry(priv->vif_list.next, struct mwl8k_vif, list);
5206
5207 return NULL;
5208 }
5209
5210 static void mwl8k_configure_filter(struct ieee80211_hw *hw,
5211 unsigned int changed_flags,
5212 unsigned int *total_flags,
5213 u64 multicast)
5214 {
5215 struct mwl8k_priv *priv = hw->priv;
5216 struct mwl8k_cmd_pkt *cmd = (void *)(unsigned long)multicast;
5217
5218 /*
5219 * AP firmware doesn't allow fine-grained control over
5220 * the receive filter.
5221 */
5222 if (priv->ap_fw) {
5223 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5224 kfree(cmd);
5225 return;
5226 }
5227
5228 /*
5229 * Enable hardware sniffer mode if FIF_CONTROL or
5230 * FIF_OTHER_BSS is requested.
5231 */
5232 if (*total_flags & (FIF_CONTROL | FIF_OTHER_BSS) &&
5233 mwl8k_configure_filter_sniffer(hw, changed_flags, total_flags)) {
5234 kfree(cmd);
5235 return;
5236 }
5237
5238 /* Clear unsupported feature flags */
5239 *total_flags &= FIF_ALLMULTI | FIF_BCN_PRBRESP_PROMISC;
5240
5241 if (mwl8k_fw_lock(hw)) {
5242 kfree(cmd);
5243 return;
5244 }
5245
5246 if (priv->sniffer_enabled) {
5247 mwl8k_cmd_enable_sniffer(hw, 0);
5248 priv->sniffer_enabled = false;
5249 }
5250
5251 if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
5252 if (*total_flags & FIF_BCN_PRBRESP_PROMISC) {
5253 /*
5254 * Disable the BSS filter.
5255 */
5256 mwl8k_cmd_set_pre_scan(hw);
5257 } else {
5258 struct mwl8k_vif *mwl8k_vif;
5259 const u8 *bssid;
5260
5261 /*
5262 * Enable the BSS filter.
5263 *
5264 * If there is an active STA interface, use that
5265 * interface's BSSID, otherwise use a dummy one
5266 * (where the OUI part needs to be nonzero for
5267 * the BSSID to be accepted by POST_SCAN).
5268 */
5269 mwl8k_vif = mwl8k_first_vif(priv);
5270 if (mwl8k_vif != NULL)
5271 bssid = mwl8k_vif->vif->bss_conf.bssid;
5272 else
5273 bssid = "\x01\x00\x00\x00\x00\x00";
5274
5275 mwl8k_cmd_set_post_scan(hw, bssid);
5276 }
5277 }
5278
5279 /*
5280 * If FIF_ALLMULTI is being requested, throw away the command
5281 * packet that ->prepare_multicast() built and replace it with
5282 * a command packet that enables reception of all multicast
5283 * packets.
5284 */
5285 if (*total_flags & FIF_ALLMULTI) {
5286 kfree(cmd);
5287 cmd = __mwl8k_cmd_mac_multicast_adr(hw, 1, NULL);
5288 }
5289
5290 if (cmd != NULL) {
5291 mwl8k_post_cmd(hw, cmd);
5292 kfree(cmd);
5293 }
5294
5295 mwl8k_fw_unlock(hw);
5296 }
5297
5298 static int mwl8k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
5299 {
5300 return mwl8k_cmd_set_rts_threshold(hw, value);
5301 }
5302
5303 static int mwl8k_sta_remove(struct ieee80211_hw *hw,
5304 struct ieee80211_vif *vif,
5305 struct ieee80211_sta *sta)
5306 {
5307 struct mwl8k_priv *priv = hw->priv;
5308
5309 if (priv->ap_fw)
5310 return mwl8k_cmd_set_new_stn_del(hw, vif, sta->addr);
5311 else
5312 return mwl8k_cmd_update_stadb_del(hw, vif, sta->addr);
5313 }
5314
5315 static int mwl8k_sta_add(struct ieee80211_hw *hw,
5316 struct ieee80211_vif *vif,
5317 struct ieee80211_sta *sta)
5318 {
5319 struct mwl8k_priv *priv = hw->priv;
5320 int ret;
5321 int i;
5322 struct mwl8k_vif *mwl8k_vif = MWL8K_VIF(vif);
5323 struct ieee80211_key_conf *key;
5324
5325 if (!priv->ap_fw) {
5326 ret = mwl8k_cmd_update_stadb_add(hw, vif, sta);
5327 if (ret >= 0) {
5328 MWL8K_STA(sta)->peer_id = ret;
5329 if (sta->ht_cap.ht_supported)
5330 MWL8K_STA(sta)->is_ampdu_allowed = true;
5331 ret = 0;
5332 }
5333
5334 } else {
5335 ret = mwl8k_cmd_set_new_stn_add(hw, vif, sta);
5336 }
5337
5338 for (i = 0; i < NUM_WEP_KEYS; i++) {
5339 key = IEEE80211_KEY_CONF(mwl8k_vif->wep_key_conf[i].key);
5340 if (mwl8k_vif->wep_key_conf[i].enabled)
5341 mwl8k_set_key(hw, SET_KEY, vif, sta, key);
5342 }
5343 return ret;
5344 }
5345
5346 static int mwl8k_conf_tx(struct ieee80211_hw *hw,
5347 struct ieee80211_vif *vif, u16 queue,
5348 const struct ieee80211_tx_queue_params *params)
5349 {
5350 struct mwl8k_priv *priv = hw->priv;
5351 int rc;
5352
5353 rc = mwl8k_fw_lock(hw);
5354 if (!rc) {
5355 BUG_ON(queue > MWL8K_TX_WMM_QUEUES - 1);
5356 memcpy(&priv->wmm_params[queue], params, sizeof(*params));
5357
5358 if (!priv->wmm_enabled)
5359 rc = mwl8k_cmd_set_wmm_mode(hw, 1);
5360
5361 if (!rc) {
5362 int q = MWL8K_TX_WMM_QUEUES - 1 - queue;
5363 rc = mwl8k_cmd_set_edca_params(hw, q,
5364 params->cw_min,
5365 params->cw_max,
5366 params->aifs,
5367 params->txop);
5368 }
5369
5370 mwl8k_fw_unlock(hw);
5371 }
5372
5373 return rc;
5374 }
5375
5376 static int mwl8k_get_stats(struct ieee80211_hw *hw,
5377 struct ieee80211_low_level_stats *stats)
5378 {
5379 return mwl8k_cmd_get_stat(hw, stats);
5380 }
5381
5382 static int mwl8k_get_survey(struct ieee80211_hw *hw, int idx,
5383 struct survey_info *survey)
5384 {
5385 struct mwl8k_priv *priv = hw->priv;
5386 struct ieee80211_conf *conf = &hw->conf;
5387 struct ieee80211_supported_band *sband;
5388
5389 if (priv->ap_fw) {
5390 sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
5391
5392 if (sband && idx >= sband->n_channels) {
5393 idx -= sband->n_channels;
5394 sband = NULL;
5395 }
5396
5397 if (!sband)
5398 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
5399
5400 if (!sband || idx >= sband->n_channels)
5401 return -ENOENT;
5402
5403 memcpy(survey, &priv->survey[idx], sizeof(*survey));
5404 survey->channel = &sband->channels[idx];
5405
5406 return 0;
5407 }
5408
5409 if (idx != 0)
5410 return -ENOENT;
5411
5412 survey->channel = conf->chandef.chan;
5413 survey->filled = SURVEY_INFO_NOISE_DBM;
5414 survey->noise = priv->noise;
5415
5416 return 0;
5417 }
5418
5419 #define MAX_AMPDU_ATTEMPTS 5
5420
5421 static int
5422 mwl8k_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5423 enum ieee80211_ampdu_mlme_action action,
5424 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
5425 u8 buf_size)
5426 {
5427
5428 int i, rc = 0;
5429 struct mwl8k_priv *priv = hw->priv;
5430 struct mwl8k_ampdu_stream *stream;
5431 u8 *addr = sta->addr, idx;
5432 struct mwl8k_sta *sta_info = MWL8K_STA(sta);
5433
5434 if (!(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
5435 return -ENOTSUPP;
5436
5437 spin_lock(&priv->stream_lock);
5438 stream = mwl8k_lookup_stream(hw, addr, tid);
5439
5440 switch (action) {
5441 case IEEE80211_AMPDU_RX_START:
5442 case IEEE80211_AMPDU_RX_STOP:
5443 break;
5444 case IEEE80211_AMPDU_TX_START:
5445 /* By the time we get here the hw queues may contain outgoing
5446 * packets for this RA/TID that are not part of this BA
5447 * session. The hw will assign sequence numbers to these
5448 * packets as they go out. So if we query the hw for its next
5449 * sequence number and use that for the SSN here, it may end up
5450 * being wrong, which will lead to sequence number mismatch at
5451 * the recipient. To avoid this, we reset the sequence number
5452 * to O for the first MPDU in this BA stream.
5453 */
5454 *ssn = 0;
5455 if (stream == NULL) {
5456 /* This means that somebody outside this driver called
5457 * ieee80211_start_tx_ba_session. This is unexpected
5458 * because we do our own rate control. Just warn and
5459 * move on.
5460 */
5461 wiphy_warn(hw->wiphy, "Unexpected call to %s. "
5462 "Proceeding anyway.\n", __func__);
5463 stream = mwl8k_add_stream(hw, sta, tid);
5464 }
5465 if (stream == NULL) {
5466 wiphy_debug(hw->wiphy, "no free AMPDU streams\n");
5467 rc = -EBUSY;
5468 break;
5469 }
5470 stream->state = AMPDU_STREAM_IN_PROGRESS;
5471
5472 /* Release the lock before we do the time consuming stuff */
5473 spin_unlock(&priv->stream_lock);
5474 for (i = 0; i < MAX_AMPDU_ATTEMPTS; i++) {
5475
5476 /* Check if link is still valid */
5477 if (!sta_info->is_ampdu_allowed) {
5478 spin_lock(&priv->stream_lock);
5479 mwl8k_remove_stream(hw, stream);
5480 spin_unlock(&priv->stream_lock);
5481 return -EBUSY;
5482 }
5483
5484 rc = mwl8k_check_ba(hw, stream, vif);
5485
5486 /* If HW restart is in progress mwl8k_post_cmd will
5487 * return -EBUSY. Avoid retrying mwl8k_check_ba in
5488 * such cases
5489 */
5490 if (!rc || rc == -EBUSY)
5491 break;
5492 /*
5493 * HW queues take time to be flushed, give them
5494 * sufficient time
5495 */
5496
5497 msleep(1000);
5498 }
5499 spin_lock(&priv->stream_lock);
5500 if (rc) {
5501 wiphy_err(hw->wiphy, "Stream for tid %d busy after %d"
5502 " attempts\n", tid, MAX_AMPDU_ATTEMPTS);
5503 mwl8k_remove_stream(hw, stream);
5504 rc = -EBUSY;
5505 break;
5506 }
5507 ieee80211_start_tx_ba_cb_irqsafe(vif, addr, tid);
5508 break;
5509 case IEEE80211_AMPDU_TX_STOP_CONT:
5510 case IEEE80211_AMPDU_TX_STOP_FLUSH:
5511 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5512 if (stream) {
5513 if (stream->state == AMPDU_STREAM_ACTIVE) {
5514 idx = stream->idx;
5515 spin_unlock(&priv->stream_lock);
5516 mwl8k_destroy_ba(hw, idx);
5517 spin_lock(&priv->stream_lock);
5518 }
5519 mwl8k_remove_stream(hw, stream);
5520 }
5521 ieee80211_stop_tx_ba_cb_irqsafe(vif, addr, tid);
5522 break;
5523 case IEEE80211_AMPDU_TX_OPERATIONAL:
5524 BUG_ON(stream == NULL);
5525 BUG_ON(stream->state != AMPDU_STREAM_IN_PROGRESS);
5526 spin_unlock(&priv->stream_lock);
5527 rc = mwl8k_create_ba(hw, stream, buf_size, vif);
5528 spin_lock(&priv->stream_lock);
5529 if (!rc)
5530 stream->state = AMPDU_STREAM_ACTIVE;
5531 else {
5532 idx = stream->idx;
5533 spin_unlock(&priv->stream_lock);
5534 mwl8k_destroy_ba(hw, idx);
5535 spin_lock(&priv->stream_lock);
5536 wiphy_debug(hw->wiphy,
5537 "Failed adding stream for sta %pM tid %d\n",
5538 addr, tid);
5539 mwl8k_remove_stream(hw, stream);
5540 }
5541 break;
5542
5543 default:
5544 rc = -ENOTSUPP;
5545 }
5546
5547 spin_unlock(&priv->stream_lock);
5548 return rc;
5549 }
5550
5551 static void mwl8k_sw_scan_start(struct ieee80211_hw *hw,
5552 struct ieee80211_vif *vif,
5553 const u8 *mac_addr)
5554 {
5555 struct mwl8k_priv *priv = hw->priv;
5556 u8 tmp;
5557
5558 if (!priv->ap_fw)
5559 return;
5560
5561 /* clear all stats */
5562 priv->channel_time = 0;
5563 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5564 ioread32(priv->regs + NOK_CCA_CNT_REG);
5565 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5566
5567 priv->sw_scan_start = true;
5568 }
5569
5570 static void mwl8k_sw_scan_complete(struct ieee80211_hw *hw,
5571 struct ieee80211_vif *vif)
5572 {
5573 struct mwl8k_priv *priv = hw->priv;
5574 u8 tmp;
5575
5576 if (!priv->ap_fw)
5577 return;
5578
5579 priv->sw_scan_start = false;
5580
5581 /* clear all stats */
5582 priv->channel_time = 0;
5583 ioread32(priv->regs + BBU_RXRDY_CNT_REG);
5584 ioread32(priv->regs + NOK_CCA_CNT_REG);
5585 mwl8k_cmd_bbp_reg_access(priv->hw, 0, BBU_AVG_NOISE_VAL, &tmp);
5586 }
5587
5588 static const struct ieee80211_ops mwl8k_ops = {
5589 .tx = mwl8k_tx,
5590 .start = mwl8k_start,
5591 .stop = mwl8k_stop,
5592 .add_interface = mwl8k_add_interface,
5593 .remove_interface = mwl8k_remove_interface,
5594 .config = mwl8k_config,
5595 .bss_info_changed = mwl8k_bss_info_changed,
5596 .prepare_multicast = mwl8k_prepare_multicast,
5597 .configure_filter = mwl8k_configure_filter,
5598 .set_key = mwl8k_set_key,
5599 .set_rts_threshold = mwl8k_set_rts_threshold,
5600 .sta_add = mwl8k_sta_add,
5601 .sta_remove = mwl8k_sta_remove,
5602 .conf_tx = mwl8k_conf_tx,
5603 .get_stats = mwl8k_get_stats,
5604 .get_survey = mwl8k_get_survey,
5605 .ampdu_action = mwl8k_ampdu_action,
5606 .sw_scan_start = mwl8k_sw_scan_start,
5607 .sw_scan_complete = mwl8k_sw_scan_complete,
5608 };
5609
5610 static void mwl8k_finalize_join_worker(struct work_struct *work)
5611 {
5612 struct mwl8k_priv *priv =
5613 container_of(work, struct mwl8k_priv, finalize_join_worker);
5614 struct sk_buff *skb = priv->beacon_skb;
5615 struct ieee80211_mgmt *mgmt = (void *)skb->data;
5616 int len = skb->len - offsetof(struct ieee80211_mgmt, u.beacon.variable);
5617 const u8 *tim = cfg80211_find_ie(WLAN_EID_TIM,
5618 mgmt->u.beacon.variable, len);
5619 int dtim_period = 1;
5620
5621 if (tim && tim[1] >= 2)
5622 dtim_period = tim[3];
5623
5624 mwl8k_cmd_finalize_join(priv->hw, skb->data, skb->len, dtim_period);
5625
5626 dev_kfree_skb(skb);
5627 priv->beacon_skb = NULL;
5628 }
5629
5630 enum {
5631 MWL8363 = 0,
5632 MWL8687,
5633 MWL8366,
5634 MWL8764,
5635 };
5636
5637 #define MWL8K_8366_AP_FW_API 3
5638 #define _MWL8K_8366_AP_FW(api) "mwl8k/fmimage_8366_ap-" #api ".fw"
5639 #define MWL8K_8366_AP_FW(api) _MWL8K_8366_AP_FW(api)
5640
5641 #define MWL8K_8764_AP_FW_API 1
5642 #define _MWL8K_8764_AP_FW(api) "mwl8k/fmimage_8764_ap-" #api ".fw"
5643 #define MWL8K_8764_AP_FW(api) _MWL8K_8764_AP_FW(api)
5644
5645 static struct mwl8k_device_info mwl8k_info_tbl[] = {
5646 [MWL8363] = {
5647 .part_name = "88w8363",
5648 .helper_image = "mwl8k/helper_8363.fw",
5649 .fw_image_sta = "mwl8k/fmimage_8363.fw",
5650 },
5651 [MWL8687] = {
5652 .part_name = "88w8687",
5653 .helper_image = "mwl8k/helper_8687.fw",
5654 .fw_image_sta = "mwl8k/fmimage_8687.fw",
5655 },
5656 [MWL8366] = {
5657 .part_name = "88w8366",
5658 .helper_image = "mwl8k/helper_8366.fw",
5659 .fw_image_sta = "mwl8k/fmimage_8366.fw",
5660 .fw_image_ap = MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API),
5661 .fw_api_ap = MWL8K_8366_AP_FW_API,
5662 .ap_rxd_ops = &rxd_ap_ops,
5663 },
5664 [MWL8764] = {
5665 .part_name = "88w8764",
5666 .fw_image_ap = MWL8K_8764_AP_FW(MWL8K_8764_AP_FW_API),
5667 .fw_api_ap = MWL8K_8764_AP_FW_API,
5668 .ap_rxd_ops = &rxd_ap_ops,
5669 },
5670 };
5671
5672 MODULE_FIRMWARE("mwl8k/helper_8363.fw");
5673 MODULE_FIRMWARE("mwl8k/fmimage_8363.fw");
5674 MODULE_FIRMWARE("mwl8k/helper_8687.fw");
5675 MODULE_FIRMWARE("mwl8k/fmimage_8687.fw");
5676 MODULE_FIRMWARE("mwl8k/helper_8366.fw");
5677 MODULE_FIRMWARE("mwl8k/fmimage_8366.fw");
5678 MODULE_FIRMWARE(MWL8K_8366_AP_FW(MWL8K_8366_AP_FW_API));
5679
5680 static const struct pci_device_id mwl8k_pci_id_table[] = {
5681 { PCI_VDEVICE(MARVELL, 0x2a0a), .driver_data = MWL8363, },
5682 { PCI_VDEVICE(MARVELL, 0x2a0c), .driver_data = MWL8363, },
5683 { PCI_VDEVICE(MARVELL, 0x2a24), .driver_data = MWL8363, },
5684 { PCI_VDEVICE(MARVELL, 0x2a2b), .driver_data = MWL8687, },
5685 { PCI_VDEVICE(MARVELL, 0x2a30), .driver_data = MWL8687, },
5686 { PCI_VDEVICE(MARVELL, 0x2a40), .driver_data = MWL8366, },
5687 { PCI_VDEVICE(MARVELL, 0x2a41), .driver_data = MWL8366, },
5688 { PCI_VDEVICE(MARVELL, 0x2a42), .driver_data = MWL8366, },
5689 { PCI_VDEVICE(MARVELL, 0x2a43), .driver_data = MWL8366, },
5690 { PCI_VDEVICE(MARVELL, 0x2b36), .driver_data = MWL8764, },
5691 { },
5692 };
5693 MODULE_DEVICE_TABLE(pci, mwl8k_pci_id_table);
5694
5695 static int mwl8k_request_alt_fw(struct mwl8k_priv *priv)
5696 {
5697 int rc;
5698 printk(KERN_ERR "%s: Error requesting preferred fw %s.\n"
5699 "Trying alternative firmware %s\n", pci_name(priv->pdev),
5700 priv->fw_pref, priv->fw_alt);
5701 rc = mwl8k_request_fw(priv, priv->fw_alt, &priv->fw_ucode, true);
5702 if (rc) {
5703 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5704 pci_name(priv->pdev), priv->fw_alt);
5705 return rc;
5706 }
5707 return 0;
5708 }
5709
5710 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv);
5711 static void mwl8k_fw_state_machine(const struct firmware *fw, void *context)
5712 {
5713 struct mwl8k_priv *priv = context;
5714 struct mwl8k_device_info *di = priv->device_info;
5715 int rc;
5716
5717 switch (priv->fw_state) {
5718 case FW_STATE_INIT:
5719 if (!fw) {
5720 printk(KERN_ERR "%s: Error requesting helper fw %s\n",
5721 pci_name(priv->pdev), di->helper_image);
5722 goto fail;
5723 }
5724 priv->fw_helper = fw;
5725 rc = mwl8k_request_fw(priv, priv->fw_pref, &priv->fw_ucode,
5726 true);
5727 if (rc && priv->fw_alt) {
5728 rc = mwl8k_request_alt_fw(priv);
5729 if (rc)
5730 goto fail;
5731 priv->fw_state = FW_STATE_LOADING_ALT;
5732 } else if (rc)
5733 goto fail;
5734 else
5735 priv->fw_state = FW_STATE_LOADING_PREF;
5736 break;
5737
5738 case FW_STATE_LOADING_PREF:
5739 if (!fw) {
5740 if (priv->fw_alt) {
5741 rc = mwl8k_request_alt_fw(priv);
5742 if (rc)
5743 goto fail;
5744 priv->fw_state = FW_STATE_LOADING_ALT;
5745 } else
5746 goto fail;
5747 } else {
5748 priv->fw_ucode = fw;
5749 rc = mwl8k_firmware_load_success(priv);
5750 if (rc)
5751 goto fail;
5752 else
5753 complete(&priv->firmware_loading_complete);
5754 }
5755 break;
5756
5757 case FW_STATE_LOADING_ALT:
5758 if (!fw) {
5759 printk(KERN_ERR "%s: Error requesting alt fw %s\n",
5760 pci_name(priv->pdev), di->helper_image);
5761 goto fail;
5762 }
5763 priv->fw_ucode = fw;
5764 rc = mwl8k_firmware_load_success(priv);
5765 if (rc)
5766 goto fail;
5767 else
5768 complete(&priv->firmware_loading_complete);
5769 break;
5770
5771 default:
5772 printk(KERN_ERR "%s: Unexpected firmware loading state: %d\n",
5773 MWL8K_NAME, priv->fw_state);
5774 BUG_ON(1);
5775 }
5776
5777 return;
5778
5779 fail:
5780 priv->fw_state = FW_STATE_ERROR;
5781 complete(&priv->firmware_loading_complete);
5782 device_release_driver(&priv->pdev->dev);
5783 mwl8k_release_firmware(priv);
5784 }
5785
5786 #define MAX_RESTART_ATTEMPTS 1
5787 static int mwl8k_init_firmware(struct ieee80211_hw *hw, char *fw_image,
5788 bool nowait)
5789 {
5790 struct mwl8k_priv *priv = hw->priv;
5791 int rc;
5792 int count = MAX_RESTART_ATTEMPTS;
5793
5794 retry:
5795 /* Reset firmware and hardware */
5796 mwl8k_hw_reset(priv);
5797
5798 /* Ask userland hotplug daemon for the device firmware */
5799 rc = mwl8k_request_firmware(priv, fw_image, nowait);
5800 if (rc) {
5801 wiphy_err(hw->wiphy, "Firmware files not found\n");
5802 return rc;
5803 }
5804
5805 if (nowait)
5806 return rc;
5807
5808 /* Load firmware into hardware */
5809 rc = mwl8k_load_firmware(hw);
5810 if (rc)
5811 wiphy_err(hw->wiphy, "Cannot start firmware\n");
5812
5813 /* Reclaim memory once firmware is successfully loaded */
5814 mwl8k_release_firmware(priv);
5815
5816 if (rc && count) {
5817 /* FW did not start successfully;
5818 * lets try one more time
5819 */
5820 count--;
5821 wiphy_err(hw->wiphy, "Trying to reload the firmware again\n");
5822 msleep(20);
5823 goto retry;
5824 }
5825
5826 return rc;
5827 }
5828
5829 static int mwl8k_init_txqs(struct ieee80211_hw *hw)
5830 {
5831 struct mwl8k_priv *priv = hw->priv;
5832 int rc = 0;
5833 int i;
5834
5835 for (i = 0; i < mwl8k_tx_queues(priv); i++) {
5836 rc = mwl8k_txq_init(hw, i);
5837 if (rc)
5838 break;
5839 if (priv->ap_fw)
5840 iowrite32(priv->txq[i].txd_dma,
5841 priv->sram + priv->txq_offset[i]);
5842 }
5843 return rc;
5844 }
5845
5846 /* initialize hw after successfully loading a firmware image */
5847 static int mwl8k_probe_hw(struct ieee80211_hw *hw)
5848 {
5849 struct mwl8k_priv *priv = hw->priv;
5850 int rc = 0;
5851 int i;
5852
5853 if (priv->ap_fw) {
5854 priv->rxd_ops = priv->device_info->ap_rxd_ops;
5855 if (priv->rxd_ops == NULL) {
5856 wiphy_err(hw->wiphy,
5857 "Driver does not have AP firmware image support for this hardware\n");
5858 rc = -ENOENT;
5859 goto err_stop_firmware;
5860 }
5861 } else {
5862 priv->rxd_ops = &rxd_sta_ops;
5863 }
5864
5865 priv->sniffer_enabled = false;
5866 priv->wmm_enabled = false;
5867 priv->pending_tx_pkts = 0;
5868 atomic_set(&priv->watchdog_event_pending, 0);
5869
5870 rc = mwl8k_rxq_init(hw, 0);
5871 if (rc)
5872 goto err_stop_firmware;
5873 rxq_refill(hw, 0, INT_MAX);
5874
5875 /* For the sta firmware, we need to know the dma addresses of tx queues
5876 * before sending MWL8K_CMD_GET_HW_SPEC. So we must initialize them
5877 * prior to issuing this command. But for the AP case, we learn the
5878 * total number of queues from the result CMD_GET_HW_SPEC, so for this
5879 * case we must initialize the tx queues after.
5880 */
5881 priv->num_ampdu_queues = 0;
5882 if (!priv->ap_fw) {
5883 rc = mwl8k_init_txqs(hw);
5884 if (rc)
5885 goto err_free_queues;
5886 }
5887
5888 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS);
5889 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5890 iowrite32(MWL8K_A2H_INT_TX_DONE|MWL8K_A2H_INT_RX_READY|
5891 MWL8K_A2H_INT_BA_WATCHDOG,
5892 priv->regs + MWL8K_HIU_A2H_INTERRUPT_CLEAR_SEL);
5893 iowrite32(MWL8K_A2H_INT_OPC_DONE,
5894 priv->regs + MWL8K_HIU_A2H_INTERRUPT_STATUS_MASK);
5895
5896 rc = request_irq(priv->pdev->irq, mwl8k_interrupt,
5897 IRQF_SHARED, MWL8K_NAME, hw);
5898 if (rc) {
5899 wiphy_err(hw->wiphy, "failed to register IRQ handler\n");
5900 goto err_free_queues;
5901 }
5902
5903 /*
5904 * When hw restart is requested,
5905 * mac80211 will take care of clearing
5906 * the ampdu streams, so do not clear
5907 * the ampdu state here
5908 */
5909 if (!priv->hw_restart_in_progress)
5910 memset(priv->ampdu, 0, sizeof(priv->ampdu));
5911
5912 /*
5913 * Temporarily enable interrupts. Initial firmware host
5914 * commands use interrupts and avoid polling. Disable
5915 * interrupts when done.
5916 */
5917 iowrite32(MWL8K_A2H_EVENTS, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5918
5919 /* Get config data, mac addrs etc */
5920 if (priv->ap_fw) {
5921 rc = mwl8k_cmd_get_hw_spec_ap(hw);
5922 if (!rc)
5923 rc = mwl8k_init_txqs(hw);
5924 if (!rc)
5925 rc = mwl8k_cmd_set_hw_spec(hw);
5926 } else {
5927 rc = mwl8k_cmd_get_hw_spec_sta(hw);
5928 }
5929 if (rc) {
5930 wiphy_err(hw->wiphy, "Cannot initialise firmware\n");
5931 goto err_free_irq;
5932 }
5933
5934 /* Turn radio off */
5935 rc = mwl8k_cmd_radio_disable(hw);
5936 if (rc) {
5937 wiphy_err(hw->wiphy, "Cannot disable\n");
5938 goto err_free_irq;
5939 }
5940
5941 /* Clear MAC address */
5942 rc = mwl8k_cmd_set_mac_addr(hw, NULL, "\x00\x00\x00\x00\x00\x00");
5943 if (rc) {
5944 wiphy_err(hw->wiphy, "Cannot clear MAC address\n");
5945 goto err_free_irq;
5946 }
5947
5948 /* Configure Antennas */
5949 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_RX, 0x3);
5950 if (rc)
5951 wiphy_warn(hw->wiphy, "failed to set # of RX antennas");
5952 rc = mwl8k_cmd_rf_antenna(hw, MWL8K_RF_ANTENNA_TX, 0x7);
5953 if (rc)
5954 wiphy_warn(hw->wiphy, "failed to set # of TX antennas");
5955
5956
5957 /* Disable interrupts */
5958 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5959 free_irq(priv->pdev->irq, hw);
5960
5961 wiphy_info(hw->wiphy, "%s v%d, %pm, %s firmware %u.%u.%u.%u\n",
5962 priv->device_info->part_name,
5963 priv->hw_rev, hw->wiphy->perm_addr,
5964 priv->ap_fw ? "AP" : "STA",
5965 (priv->fw_rev >> 24) & 0xff, (priv->fw_rev >> 16) & 0xff,
5966 (priv->fw_rev >> 8) & 0xff, priv->fw_rev & 0xff);
5967
5968 return 0;
5969
5970 err_free_irq:
5971 iowrite32(0, priv->regs + MWL8K_HIU_A2H_INTERRUPT_MASK);
5972 free_irq(priv->pdev->irq, hw);
5973
5974 err_free_queues:
5975 for (i = 0; i < mwl8k_tx_queues(priv); i++)
5976 mwl8k_txq_deinit(hw, i);
5977 mwl8k_rxq_deinit(hw, 0);
5978
5979 err_stop_firmware:
5980 mwl8k_hw_reset(priv);
5981
5982 return rc;
5983 }
5984
5985 /*
5986 * invoke mwl8k_reload_firmware to change the firmware image after the device
5987 * has already been registered
5988 */
5989 static int mwl8k_reload_firmware(struct ieee80211_hw *hw, char *fw_image)
5990 {
5991 int i, rc = 0;
5992 struct mwl8k_priv *priv = hw->priv;
5993 struct mwl8k_vif *vif, *tmp_vif;
5994
5995 mwl8k_stop(hw);
5996 mwl8k_rxq_deinit(hw, 0);
5997
5998 /*
5999 * All the existing interfaces are re-added by the ieee80211_reconfig;
6000 * which means driver should remove existing interfaces before calling
6001 * ieee80211_restart_hw
6002 */
6003 if (priv->hw_restart_in_progress)
6004 list_for_each_entry_safe(vif, tmp_vif, &priv->vif_list, list)
6005 mwl8k_remove_vif(priv, vif);
6006
6007 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6008 mwl8k_txq_deinit(hw, i);
6009
6010 rc = mwl8k_init_firmware(hw, fw_image, false);
6011 if (rc)
6012 goto fail;
6013
6014 rc = mwl8k_probe_hw(hw);
6015 if (rc)
6016 goto fail;
6017
6018 if (priv->hw_restart_in_progress)
6019 return rc;
6020
6021 rc = mwl8k_start(hw);
6022 if (rc)
6023 goto fail;
6024
6025 rc = mwl8k_config(hw, ~0);
6026 if (rc)
6027 goto fail;
6028
6029 for (i = 0; i < MWL8K_TX_WMM_QUEUES; i++) {
6030 rc = mwl8k_conf_tx(hw, NULL, i, &priv->wmm_params[i]);
6031 if (rc)
6032 goto fail;
6033 }
6034
6035 return rc;
6036
6037 fail:
6038 printk(KERN_WARNING "mwl8k: Failed to reload firmware image.\n");
6039 return rc;
6040 }
6041
6042 static const struct ieee80211_iface_limit ap_if_limits[] = {
6043 { .max = 8, .types = BIT(NL80211_IFTYPE_AP) },
6044 { .max = 1, .types = BIT(NL80211_IFTYPE_STATION) },
6045 };
6046
6047 static const struct ieee80211_iface_combination ap_if_comb = {
6048 .limits = ap_if_limits,
6049 .n_limits = ARRAY_SIZE(ap_if_limits),
6050 .max_interfaces = 8,
6051 .num_different_channels = 1,
6052 };
6053
6054
6055 static int mwl8k_firmware_load_success(struct mwl8k_priv *priv)
6056 {
6057 struct ieee80211_hw *hw = priv->hw;
6058 int i, rc;
6059
6060 rc = mwl8k_load_firmware(hw);
6061 mwl8k_release_firmware(priv);
6062 if (rc) {
6063 wiphy_err(hw->wiphy, "Cannot start firmware\n");
6064 return rc;
6065 }
6066
6067 /*
6068 * Extra headroom is the size of the required DMA header
6069 * minus the size of the smallest 802.11 frame (CTS frame).
6070 */
6071 hw->extra_tx_headroom =
6072 sizeof(struct mwl8k_dma_data) - sizeof(struct ieee80211_cts);
6073
6074 hw->extra_tx_headroom -= priv->ap_fw ? REDUCED_TX_HEADROOM : 0;
6075
6076 hw->queues = MWL8K_TX_WMM_QUEUES;
6077
6078 /* Set rssi values to dBm */
6079 hw->flags |= IEEE80211_HW_SIGNAL_DBM | IEEE80211_HW_HAS_RATE_CONTROL;
6080
6081 /*
6082 * Ask mac80211 to not to trigger PS mode
6083 * based on PM bit of incoming frames.
6084 */
6085 if (priv->ap_fw)
6086 hw->flags |= IEEE80211_HW_AP_LINK_PS;
6087
6088 hw->vif_data_size = sizeof(struct mwl8k_vif);
6089 hw->sta_data_size = sizeof(struct mwl8k_sta);
6090
6091 priv->macids_used = 0;
6092 INIT_LIST_HEAD(&priv->vif_list);
6093
6094 /* Set default radio state and preamble */
6095 priv->radio_on = false;
6096 priv->radio_short_preamble = false;
6097
6098 /* Finalize join worker */
6099 INIT_WORK(&priv->finalize_join_worker, mwl8k_finalize_join_worker);
6100 /* Handle watchdog ba events */
6101 INIT_WORK(&priv->watchdog_ba_handle, mwl8k_watchdog_ba_events);
6102 /* To reload the firmware if it crashes */
6103 INIT_WORK(&priv->fw_reload, mwl8k_hw_restart_work);
6104
6105 /* TX reclaim and RX tasklets. */
6106 tasklet_init(&priv->poll_tx_task, mwl8k_tx_poll, (unsigned long)hw);
6107 tasklet_disable(&priv->poll_tx_task);
6108 tasklet_init(&priv->poll_rx_task, mwl8k_rx_poll, (unsigned long)hw);
6109 tasklet_disable(&priv->poll_rx_task);
6110
6111 /* Power management cookie */
6112 priv->cookie = pci_alloc_consistent(priv->pdev, 4, &priv->cookie_dma);
6113 if (priv->cookie == NULL)
6114 return -ENOMEM;
6115
6116 mutex_init(&priv->fw_mutex);
6117 priv->fw_mutex_owner = NULL;
6118 priv->fw_mutex_depth = 0;
6119 priv->hostcmd_wait = NULL;
6120
6121 spin_lock_init(&priv->tx_lock);
6122
6123 spin_lock_init(&priv->stream_lock);
6124
6125 priv->tx_wait = NULL;
6126
6127 rc = mwl8k_probe_hw(hw);
6128 if (rc)
6129 goto err_free_cookie;
6130
6131 hw->wiphy->interface_modes = 0;
6132
6133 if (priv->ap_macids_supported || priv->device_info->fw_image_ap) {
6134 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_AP);
6135 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6136 hw->wiphy->iface_combinations = &ap_if_comb;
6137 hw->wiphy->n_iface_combinations = 1;
6138 }
6139
6140 if (priv->sta_macids_supported || priv->device_info->fw_image_sta)
6141 hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_STATION);
6142
6143 rc = ieee80211_register_hw(hw);
6144 if (rc) {
6145 wiphy_err(hw->wiphy, "Cannot register device\n");
6146 goto err_unprobe_hw;
6147 }
6148
6149 return 0;
6150
6151 err_unprobe_hw:
6152 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6153 mwl8k_txq_deinit(hw, i);
6154 mwl8k_rxq_deinit(hw, 0);
6155
6156 err_free_cookie:
6157 if (priv->cookie != NULL)
6158 pci_free_consistent(priv->pdev, 4,
6159 priv->cookie, priv->cookie_dma);
6160
6161 return rc;
6162 }
6163 static int mwl8k_probe(struct pci_dev *pdev,
6164 const struct pci_device_id *id)
6165 {
6166 static int printed_version;
6167 struct ieee80211_hw *hw;
6168 struct mwl8k_priv *priv;
6169 struct mwl8k_device_info *di;
6170 int rc;
6171
6172 if (!printed_version) {
6173 printk(KERN_INFO "%s version %s\n", MWL8K_DESC, MWL8K_VERSION);
6174 printed_version = 1;
6175 }
6176
6177
6178 rc = pci_enable_device(pdev);
6179 if (rc) {
6180 printk(KERN_ERR "%s: Cannot enable new PCI device\n",
6181 MWL8K_NAME);
6182 return rc;
6183 }
6184
6185 rc = pci_request_regions(pdev, MWL8K_NAME);
6186 if (rc) {
6187 printk(KERN_ERR "%s: Cannot obtain PCI resources\n",
6188 MWL8K_NAME);
6189 goto err_disable_device;
6190 }
6191
6192 pci_set_master(pdev);
6193
6194
6195 hw = ieee80211_alloc_hw(sizeof(*priv), &mwl8k_ops);
6196 if (hw == NULL) {
6197 printk(KERN_ERR "%s: ieee80211 alloc failed\n", MWL8K_NAME);
6198 rc = -ENOMEM;
6199 goto err_free_reg;
6200 }
6201
6202 SET_IEEE80211_DEV(hw, &pdev->dev);
6203 pci_set_drvdata(pdev, hw);
6204
6205 priv = hw->priv;
6206 priv->hw = hw;
6207 priv->pdev = pdev;
6208 priv->device_info = &mwl8k_info_tbl[id->driver_data];
6209
6210 if (id->driver_data == MWL8764)
6211 priv->is_8764 = true;
6212
6213 priv->sram = pci_iomap(pdev, 0, 0x10000);
6214 if (priv->sram == NULL) {
6215 wiphy_err(hw->wiphy, "Cannot map device SRAM\n");
6216 rc = -EIO;
6217 goto err_iounmap;
6218 }
6219
6220 /*
6221 * If BAR0 is a 32 bit BAR, the register BAR will be BAR1.
6222 * If BAR0 is a 64 bit BAR, the register BAR will be BAR2.
6223 */
6224 priv->regs = pci_iomap(pdev, 1, 0x10000);
6225 if (priv->regs == NULL) {
6226 priv->regs = pci_iomap(pdev, 2, 0x10000);
6227 if (priv->regs == NULL) {
6228 wiphy_err(hw->wiphy, "Cannot map device registers\n");
6229 rc = -EIO;
6230 goto err_iounmap;
6231 }
6232 }
6233
6234 /*
6235 * Choose the initial fw image depending on user input. If a second
6236 * image is available, make it the alternative image that will be
6237 * loaded if the first one fails.
6238 */
6239 init_completion(&priv->firmware_loading_complete);
6240 di = priv->device_info;
6241 if (ap_mode_default && di->fw_image_ap) {
6242 priv->fw_pref = di->fw_image_ap;
6243 priv->fw_alt = di->fw_image_sta;
6244 } else if (!ap_mode_default && di->fw_image_sta) {
6245 priv->fw_pref = di->fw_image_sta;
6246 priv->fw_alt = di->fw_image_ap;
6247 } else if (ap_mode_default && !di->fw_image_ap && di->fw_image_sta) {
6248 printk(KERN_WARNING "AP fw is unavailable. Using STA fw.");
6249 priv->fw_pref = di->fw_image_sta;
6250 } else if (!ap_mode_default && !di->fw_image_sta && di->fw_image_ap) {
6251 printk(KERN_WARNING "STA fw is unavailable. Using AP fw.");
6252 priv->fw_pref = di->fw_image_ap;
6253 }
6254 rc = mwl8k_init_firmware(hw, priv->fw_pref, true);
6255 if (rc)
6256 goto err_stop_firmware;
6257
6258 priv->hw_restart_in_progress = false;
6259
6260 priv->running_bsses = 0;
6261
6262 return rc;
6263
6264 err_stop_firmware:
6265 mwl8k_hw_reset(priv);
6266
6267 err_iounmap:
6268 if (priv->regs != NULL)
6269 pci_iounmap(pdev, priv->regs);
6270
6271 if (priv->sram != NULL)
6272 pci_iounmap(pdev, priv->sram);
6273
6274 ieee80211_free_hw(hw);
6275
6276 err_free_reg:
6277 pci_release_regions(pdev);
6278
6279 err_disable_device:
6280 pci_disable_device(pdev);
6281
6282 return rc;
6283 }
6284
6285 static void mwl8k_remove(struct pci_dev *pdev)
6286 {
6287 struct ieee80211_hw *hw = pci_get_drvdata(pdev);
6288 struct mwl8k_priv *priv;
6289 int i;
6290
6291 if (hw == NULL)
6292 return;
6293 priv = hw->priv;
6294
6295 wait_for_completion(&priv->firmware_loading_complete);
6296
6297 if (priv->fw_state == FW_STATE_ERROR) {
6298 mwl8k_hw_reset(priv);
6299 goto unmap;
6300 }
6301
6302 ieee80211_stop_queues(hw);
6303
6304 ieee80211_unregister_hw(hw);
6305
6306 /* Remove TX reclaim and RX tasklets. */
6307 tasklet_kill(&priv->poll_tx_task);
6308 tasklet_kill(&priv->poll_rx_task);
6309
6310 /* Stop hardware */
6311 mwl8k_hw_reset(priv);
6312
6313 /* Return all skbs to mac80211 */
6314 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6315 mwl8k_txq_reclaim(hw, i, INT_MAX, 1);
6316
6317 for (i = 0; i < mwl8k_tx_queues(priv); i++)
6318 mwl8k_txq_deinit(hw, i);
6319
6320 mwl8k_rxq_deinit(hw, 0);
6321
6322 pci_free_consistent(priv->pdev, 4, priv->cookie, priv->cookie_dma);
6323
6324 unmap:
6325 pci_iounmap(pdev, priv->regs);
6326 pci_iounmap(pdev, priv->sram);
6327 ieee80211_free_hw(hw);
6328 pci_release_regions(pdev);
6329 pci_disable_device(pdev);
6330 }
6331
6332 static struct pci_driver mwl8k_driver = {
6333 .name = MWL8K_NAME,
6334 .id_table = mwl8k_pci_id_table,
6335 .probe = mwl8k_probe,
6336 .remove = mwl8k_remove,
6337 };
6338
6339 module_pci_driver(mwl8k_driver);
6340
6341 MODULE_DESCRIPTION(MWL8K_DESC);
6342 MODULE_VERSION(MWL8K_VERSION);
6343 MODULE_AUTHOR("Lennert Buytenhek <buytenh@marvell.com>");
6344 MODULE_LICENSE("GPL");
Linux with added FPC-III support